Precontamination
初期污染
🗣️ 情景例句
which is going out with a camera and a roll of film
那就是带着照相机和一卷底片出去久
All right.
好吧。
The river which forms the eastern boundary of our farm has always played an important part in our lives.
形成我们农场东部边界的一条河流一直在我们生活中发挥着重要作用。