Ventless
a. 无孔的, 无出口的
🗣️ 情景例句
You'll be glad to hear that Bill is alive and kicking.
比尔现在精神饱满，你听了一定很高兴。
If he doesn't, will you buy one?
如果他不，你会买一个吗？
The book is protected by copyright.
该书受版权保护。