| 1. | You need a sharp knife to cut through the knot .
你需用快刀才能把结切断。 |
| 2. | If stricture develops, bouginage will be needed .
若狭窄发生，则需用探条扩张术。 |
| 3. | The wood is full of pits and needs sanding .
这木料上到处是凹坑，需用砂纸打磨一下。 |
| 4. | I have to machine the hem .
我需用缝纫机缝边。 |
| 5. | Erection of the pylon required a crane of 1000 ton capacity .
塔架安装需用起重量达1000吨的吊机。 |
| 6. | You will need to pump hard for several minutes to fill the tank .
你需用泵着实抽吸几分钟，才能把油箱灌满。 |
| 7. | Finally, we need some means of igniting the mixture in the top of the cylinder .
最后我们需用一些装置点燃汽缸顶部的混合气体。 |
| 8. | Compressibility effects are investigated with highspeed models in high-speed tunnels .
压缩性影响需用高速模型在高速风洞中试验。 |
| 9. | The amplified strings require less energy to produce a rich resonant sound .
声音被放大了，在琴弦上反需用很小的力量，就能产生丰满的、共鸣音响。 |
| 10. | The amplified strings require less energy to produce a rich, resonant sound .
因为声音被放大了，在琴弦上仅需用很小的力量，就能产生丰满的共鸣音响。 |
