re-,向后，往回，-tract,拉，词源同 draw,tractor.

1. Torn muscles retract, and lose strength, structure, and tightness.

撕裂的肌肉会收缩，丧失原来的力量、结构和紧实度。

2. He's hoping that if he makes me feel guilty, I'll retract.

他指望着如果他能让我感到内疚，我就会收回所说的话。

3. A cat can retract its claws, but a dog can't.

猫的爪子可以缩进去, 但狗不能.

4. You may retract that statement.

你可以撤回那个声明.

5. Mr Smith hurriedly sought to retract the statement, but it had just been broadcast on national radio.

史密斯先生想赶快收回这项声明，但它刚刚已经在国家电台播出了。