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。
- Staggering to his feet, the drunkard bellow out a laugh. 醉汉摇摇晃晃地站起来时发出一声大笑。
- This instrument monitors the patient's heartbeats. 这台仪器监听病人的心跳。
- 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 music was so loud we had to bellow at each other to be heard. 音乐的声音实在太大，我们只有彼此大声喊叫才能把话听清。
- 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。
- bellows instruments 膜盒式仪表
- His job is to blow the bellows for the blacksmith. 他的工作是给铁匠拉风箱。
- Air is drawn in through reeds by suction bellows. 空气通过簧片引入吸气风箱。
- 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。
- 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。
- His job is to blow the bellows for the blacksmith . 他的工作是给铁匠拉风箱。
- These instruments are finely set. 这些仪器是经过精密调整的。
- The king signed the instrument of abdication. 国王签署了逊位的文告。
