sight level
英
美
- level n.数量；等级；水平；水平线adj.平的；等高的v.弄平；夷平；对准adv.水平地
- sight n.视力；看见；视线；景物v.瞄准；看见；观测
- Construction workers are measuring distances with a level.
施工人员正在用水准仪进行测距工作。
- It is easy to use a water level to measure things, but you need to do many experiments before mastering it.
水准仪的测量方法很简单，但也需要通过多次的实践才能够掌握。
