| 1. | Sir, did you address that language to me ?
先生，你在使用那种口气对我讲话吗？ |
| 2. | Strong acids are often diluted before they are used .
强酸在使用前常加以稀释。 |
| 3. | Glass bead gels need not be hydrated prior to use .
玻璃珠凝胶在使用之前不需要水化。 |
| 4. | Chlorine is usually liquefied before use or storage .
氯在使用和贮存以前通常要液化。 |
| 5. | Ruling pens are still in use .
直线笔目前仍在使用。 |
| 6. | The word " bureaucracy " often includes contempt when used .
“官吏”这个词在使用时常常带有轻蔑的含义。 |
| 7. | In large businesses the annual plan is more or less in current use .
在大企业中，目前或多或少地都在使用年度计划。 |
| 8. | About half of the world's known supply of copper ore is already in use .
全世界已知的铜矿储量，大约有一半已在使用了。 |
| 9. | The solid should be agglomerated and pelletized to some extent before use .
固体在使用之前应进行一定程度的团聚和成型。 |
| 10. | Several different types of valves are in use. some are back pressure valves .
有几种不同的阀在使用中，有些是反向压力阀。 |
