cylinder

cylinder — noun

1. A container or shape whose ends are identical circles and whose sides run parall

1.名詞B1
釋義

A container or shape whose ends are identical circles and whose sides run parallel between them, similar to a pipe or a can of soda.

例句

The restaurant stores cooking oil in large metal cylinders near the kitchen entrance.

cylinder — common storage container

Tanvi showed the children how to roll a flat sheet of paper into a cylinder.

cylinder as a geometric 3D shape

同義詞
  • tube

    more general; a tube can be flexible and need not have a circular cross-section

  • pipe

    usually refers to a hollow cylinder used for carrying liquids or gases, especially in plumbing

  • drum

    a large cylinder used for storing bulk liquids, often made of metal or plastic

2. A metal tube within an engine where a piston slides up and down to change fuel i

2.名詞B2
釋義

A metal tube within an engine where a piston slides up and down to change fuel into motion.

例句

The mechanic inspected each cylinder of the car engine for cracks or scratches.

cylinder of an engine — standard context

Sven's motorcycle has a single large cylinder, which makes the engine simpler to repair.

用法筆記

Often used in compounds like 'six-cylinder engine' or 'cylinder head'. The number of cylinders in an engine affects its power and smoothness.

3. In basketball, the painted area near the basket where offensive players cannot s

3.名詞C1
釋義

In basketball, the painted area near the basket where offensive players cannot stay for more than three seconds.

例句

The referee called a three-second violation when Pim stayed inside the cylinder too long.

the cylinder = restricted area in basketball

Lucía drove past her defender and scored a layup from inside the cylinder.

同義詞
  • key

    short for 'keyhole area'; older term for the painted area near the basket

  • paint

    informal term referring to the colored area on the court floor

  • restricted area

    the official rulebook name for this space

用法筆記

Also called the 'restricted area' or 'lane'. In official FIBA and NBA rules, this is the painted area under the basket marked by a semi-circle or rectangle.

常見錯誤

❌The guard stayed in the cylinder for five seconds and no foul was called.
✅The referee called a three-second violation when the guard stayed in the cylinder for five seconds.
💡The three-second limit applies to offensive players in the restricted area.

4. In basketball, the imaginary vertical space directly above the basket that defen

4.名詞C1
釋義

In basketball, the imaginary vertical space directly above the basket that defenders must not touch during a shot.

例句

The referee called goaltending when Iris's hand entered the cylinder above the rim.

cylinder above the rim — imaginary vertical space

Once the ball is inside the cylinder, no defensive player may touch it.

同義詞

用法筆記

Also called the 'imaginary cylinder'. Touching the ball inside this area is called goaltending (in the NBA) or basket interference (in FIBA rules).

常見錯誤

❌The player touched the ball above the rim, and it was legal.
✅The player touched the ball above the rim, and the referee called goaltending.
💡Any contact with the ball inside the cylinder above the rim is a violation.