migration

migration — noun

1. the regular long-distance movement that herds of mammals, flocks of birds, or sc

1.名詞B1
釋義

the regular long-distance movement that herds of mammals, flocks of birds, or schools of fish make at certain times of the year, usually to find food, breed, or reach a warmer place

例句

Every autumn, Aiko watches the migration of geese flying south over her village.

collocation: autumn / spring migration

The wildebeest migration across the Serengeti is one of Africa's most famous natural events.

同義詞
  • movement

    more general, does not imply seasonal or long-distance travel

  • travel

    less specific; migration is a type of regular, group travel

  • relocation

    focuses on changing location; less common for animals

反義詞
  • residence

    staying in one place throughout the year

文法句型

migration + of + noun

migration + from + place + to + place

用法筆記

Often uncountable when referring to the general phenomenon ("Migration is essential for these birds"). Countable when describing a specific instance ("a mass migration of salmon every year").

常見錯誤

❌The migration of my cat to the new house was easy.
✅Moving my cat to the new house was easy.
💡Migration describes large-scale group movement, not an individual pet's move.
❌Birds do migration every year.
✅Birds migrate every year.
💡When describing the action directly, use the verb 'migrate' rather than 'do migration'.

2. the movement of large numbers of people from one country, region, or town to ano

2.名詞B1
釋義

the movement of large numbers of people from one country, region, or town to another, especially to find work, escape danger, or improve their living conditions

例句

Leila's migration from Oaxaca to Mexico City shows how young people chase factory work.

collocation: labor / economic migration

Rohan's grandparents joined the great migration from Northern Europe to Australia in the 1950s.

同義詞
  • immigration

    specifically means entering a country to live there

  • emigration

    specifically means leaving one's own country to live elsewhere

  • relocation

    can apply to individuals or small groups; less tied to mass movement

反義詞
  • settlement

    the act of staying in one place after arriving

文法句型

migration + of + people

migration + from + country/region + to + country/region

用法筆記

Distinguish from 'immigration' (coming into a specific country) and 'emigration' (leaving a specific country). 'Migration' is the broader term for any large-scale movement of people and does not specify direction.

常見錯誤

❌His migration to the new apartment took three hours.
✅His move to the new apartment took three hours.
💡Migration refers to large-scale or group relocation, not an individual's small move.
❌Migration means coming into a country.
✅Migration is the general movement of people. Immigration specifically means entering a country.
💡Learners often confuse migration with immigration.

3. the process of moving computer programs, files, or operations from one system or

3.名詞B2
釋義

the process of moving computer programs, files, or operations from one system or platform to another, often to get better performance or newer features

例句

Dr. Okafor supervised the data migration to the hospital's new patient record system.

collocation: data migration

The IT team planned the system migration for months to avoid losing any important files.

collocation: system migration

同義詞
  • transfer

    simpler and more general; does not imply a whole-system change

  • conversion

    focuses on changing the format of data rather than moving it

  • upgrade

    focuses on getting a newer, better system, not necessarily the movement process

文法句型

data migration

system migration

migration + from + old system + to + new system

用法筆記

Common in information technology contexts. Typically used with a modifier such as 'data', 'system', 'software', or 'cloud'. The process usually involves preparation, transfer, testing, and switching over to the new system.

常見錯誤

❌The migration of files from my old phone to my new phone happened automatically.
✅I transferred the files from my old phone to my new one.
💡'Migration' is used more for professional IT infrastructure than personal device changes.

4. the situation in which customers stop using one company's service and begin usin

4.名詞C1
釋義

the situation in which customers stop using one company's service and begin using a competitor's service instead, such as with phone, internet, or insurance companies

例句

The telecom company cut prices to slow customer migration to rival networks.

collocation: customer migration

The new banking fees caused a steady migration of account holders toward smaller credit unions.

同義詞
  • switch

    simpler and more common for individual customer decisions

  • transfer

    focuses on moving the account or service

  • churn

    business term for the rate at which customers leave a service

反義詞
  • retention

    keeping customers with the current provider

文法句型

migration + of + customers

customer migration

migration + to + new provider

用法筆記

Primarily used in business and marketing contexts. Often describes a trend rather than individual decisions. The term 'churn' is a related concept in customer analytics that focuses on the rate of customer loss.

常見錯誤

❌I did a migration from my old phone company.
✅I switched from my old phone company.
💡For individual actions, use 'switch' or 'change'. 'Migration' describes an overall business trend.