| 1. | A sharp metallic rapping came on the front door .
前门上响起一阵刺耳的金属敲击声。 |
| 2. | One may knock to signal one 's presence to others .
可用敲击发出的声音向别人表示有人在此。 |
| 3. | He drummed his fingers on the desk top for emphasis .
他的手指在桌面上敲击着借以强调他的语气。 |
| 4. | " knock " means hitting something with a clear , sharp sound .
“knock”意为敲击某物而发出清脆的声音。 |
| 5. | The woman had been pecking at on underwood typewriter circa 1950 .
这位妇女正敲击着一台一九五年左右出厂的安德伍德牌打字机。 |
| 6. | The rain came then: a sudden deluge which pounded on the roof and against the windows .
那时倾盆大雨降临了，砰砰地敲击着屋顶和窗户。 |
| 7. | Chest percussion and vibration are used with postural drainage to help dislodge secretions .
在做体位引流时要敲击和振动胸部帮助分泌物松动排出。 |
| 8. | It shatters like glass under a sharp blow, just as does an ice cube from the refrigerator .
在猛烈敲击下，正如从冰箱中取出的冰块那样，它就象玻璃似地裂成碎片。 |
| 9. | Then, what was the surprise of the crew of the large ship to hear strange tappings in the hold .
接着大船上的水手听见底层舱中发出奇怪的敲击声，他们是多么的惊讶！ |
| 10. | Rain was drumming on the roof, wind fluting in the eaves of the cottage, sea performing glissandi with the beach .
雨，敲击着屋顶，风，吹拂着房檐；大海与沙滩，合奏着轻音乐。 |
