Pentafining
[机] 戊烷精炼
🗣️ 情景例句
Don't open the door if you don't know who it is.
如果有陌生人敲门不要开门。
When do you expect to have this ready for sale?
你希望此种商品何时上市出售呢？
Let bygones be bygones.
过去的，就让它过去吧。