| 21. | When I saw he was on fire I had the presence of mind to knock him down and roll him. |
| 当看到火烧到他身上时，我急中生智将他推倒并使他在地上滚灭了火焰。
|
| 22. | Did you hear a knock ? |
| 你听到敲门声吗？
|
| 23. | I will teach the rascal to play this runaway knock on this door. |
| 我要教训那个敲了门就逃的坏蛋。
|
| 24. | While they were talking there came a knock at the door. |
| 在他们谈话时，传来了一声敲门声。
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| 25. | The hard knock made her cry. |
| 狠狠的一击把她打哭了。
|
| 26. | A knock sounded. |
| 响起了敲击声。
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| 27. | He's taken a bad knock . |
| 他精神上受到很大打击。
|
| 28. | The enemy got a hard knock . |
| 敌人受到了沉重的打击。
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| 29. | He got a nasty knock on the head when he fell. |
| 他跌倒时部撞很很重。
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| 30. | The door of manager's office opened to her at the first knock . |
| 她一敲，经理办公室的门便应声而开。
|