- 重点词汇
- 溢流阀
overflow valve
- 什么
what; whatever; wot; something; anything; everything; nothing (in negative statements); eh; pardon
- 作用
act; function; operate; play a role; have an effect; exert influence; act on; conduct; handle; role; effect; action; influence; impact; efficacy; utility; mechanism of action; functional; effective