您要查找的是不是：
- Microscopes and telescopes are optical instruments. 望远镜和显微镜是光学仪器。
- The hospital imported some surgical instruments. 医院进口了一些外科器械。
- The stethoscope is a medical instrument. 听诊器是一种医疗器械。
- The scientist needs some delicate instruments. 这位科学家需要一些精密的仪器。
- This instrument monitors the patient's heartbeats. 这台仪器监听病人的心跳。
- Contraception instruments 避孕药具
- Telescopes and microscopes are visual instruments. 望远镜和显微镜是光学仪器。
- The strings are a category of musical instruments. 弦乐器是乐器的一种。
- Our dentist keeps his instruments in trays. 我们的牙科医生将他的器具放在隔底盘内。
- The dentist picked up several instruments. 那牙科医生把几把器械收拾好。
- The orchestra tuned their instruments. 乐队在给乐器调音。
- Several members of the orchestra are tuning up their instruments. 乐队中有几个成员正在调他们的乐器。
- The new stage of contraception among Chinese women. 中国妇女避孕的新阶段。
- He reflected that the quality of the instruments was good anyway. 他寻思，不管怎样，这些乐器的质量还是不错的。
- These instruments are finely set. 这些仪器是经过精密调整的。
- Abstract：Ask: Such contraception can you succeed? 正文:问：如此辟孕能胜利么？
- The king signed the instrument of abdication. 国王签署了逊位的文告。
- A mute for various brass instruments. 减音器各种铜管乐器中的一种减音器
- In misty weather, the pilots have to fly by instruments. 大雾天飞行，飞行员只得靠仪表。
- A similar board used as a percussion instrument. 敲击板用作打击乐器的一种类似的板
