injection
injection — 名詞
1. a medical procedure in which a liquid medicine or drug is pushed through a hollo
注射
用針筒將藥物送入體內
a medical procedure in which a liquid medicine or drug is pushed through a hollow needle into a person's skin, muscle, or vein so that it enters the bloodstream or body tissue.
The nurse gave Asher an injection in his upper arm before the flight.
護士在出發前給 Asher 的上臂打了一針。
collocation: give + an injection + in/into [body part]
Mayumi needed a daily insulin injection to keep her blood sugar stable.
Mayumi 每天需要注射胰島素來穩定血糖。
injection + of [drug] for chronic condition
Free flu injections are offered at the clinic every autumn for elderly residents.
每年秋天，診所都會為年長居民免費提供流感疫苗注射。
The doctor used a thin needle so the injection would hurt less.
醫生用了一根細針，這樣注射時就不會太痛。
Some medications work faster as an injection than as a pill.
有些藥物用注射的方式比吃藥片見效更快。
- shot
informal, very common in American English (e.g., 'a flu shot')
- jab
informal, common in British English (e.g., 'a covid jab')
- vaccination
narrower meaning — specifically for injections that prevent disease, not for medication in general
- inoculation
formal and somewhat dated; refers to introducing a weak form of a disease to build immunity
文法句型
give/get/receive an injection
injection + of + [medicine/vaccine/insulin]
injection + in/into + [body part]
用法筆記
Commonly used with the verbs 'give', 'get', 'have', or 'receive'. The specific location of the injection is usually introduced by 'in' or 'into' (e.g., 'an injection in the thigh').
常見錯誤
2. a large amount of money, investment, or new resources that is put into a company
注資
為改善狀況而投入資金
a large amount of money, investment, or new resources that is put into a company, project, or national economy to strengthen it, help it recover from trouble, or make it grow.
The struggling car manufacturer needed an injection of cash to avoid bankruptcy.
這家陷入困境的汽車製造商需要注入一筆現金才能避免破產。
collocation: injection of cash
Saira's startup stayed afloat thanks to a capital injection from a group of overseas investors.
Saira 的新創公司靠一群海外投資者的資金注入才得以撐下來。
collocation: capital injection
A fresh injection of government funds helped rebuild the damaged railway line.
一筆新的政府資金注入幫助重建了受損的鐵路線。
Without the injection of new technology, the old factory could not compete with modern rivals.
如果沒有新技術的注入，那家老舊工廠根本無法與現代對手競爭。
The central bank announced a major injection of money into the banking system.
中央銀行宣布向銀行體系大規模注入資金。
- infusion
very similar meaning, often used for the introduction of money or new ideas into an organisation (e.g., 'a capital infusion')
- investment
broader; an injection of money specifically implies an urgent or large-scale investment aimed at rescuing or reviving something
- stimulus
usually refers to government spending aimed at the whole economy rather than a single company
- withdrawal
the removal of money or resources
- cut
a reduction in spending or funding
文法句型
a(n) [adjective] injection of [money/capital/funds]
injection + into + [company/economy/project]
用法筆記
Commonly followed by 'of' plus the resource being introduced (money, capital, funds, cash, technology). The target recipient is introduced by 'into'. Typically used in business journalism and economic reporting.
常見錯誤
3. a mechanical process in which a liquid, gas, or fuel is forced under high pressu
噴射
將液體或氣體加壓送入機械系統
a mechanical process in which a liquid, gas, or fuel is forced under high pressure into an engine, chamber, or other system so that it mixes with air or reacts to produce power or a desired effect.
Modern cars rely on electronic fuel injection to burn petrol more efficiently.
現代汽車依靠電子燃油噴射系統來更有效率地燃燒汽油。
compound noun: fuel injection
Hiro replaced the faulty injection pump on his diesel truck over the weekend.
Hiro 上週末更換了他柴油卡車上故障的噴射泵。
compound: injection pump
The mechanic found a blockage in the fuel injection nozzle of the delivery van.
技師在這輛送貨車的燃油噴射噴嘴上發現了堵塞。
Fuel injection systems spray a fine mist of petrol directly into the engine cylinders.
燃油噴射系統會將霧化汽油直接噴入引擎汽缸。
The factory uses steam injection to speed up the chemical reaction in the pipes.
這家工廠利用蒸汽噴射來加速管道內的化學反應。
- fuel delivery
broader term for the process of moving fuel to the engine, not necessarily under pressure
- spraying
describes the physical action but is less precise and not a standard technical synonym
文法句型
fuel injection
injection + pump/valve/nozzle/system
用法筆記
Most commonly encountered in the compound 'fuel injection'. Can be used with other substances (steam, water, air) in industrial or engineering contexts. Frequently modifies other nouns (injection pump, injection valve, injection nozzle).