Hand-operated
[化] 用手操作的
🧩 词语组成解析
hand
[hænd]
n. 手;协助，帮助;（工具等的）把，柄;掌管;
vt. 传递，交给;搀扶;支持;
a. 操作的
🗣️ 情景例句
There are, Ellen.
一定有， Ellen。
Why are you looking at me?
你为什么看着我？
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。