Precontamination
初期污染
🗣️ 情景例句
but they probably had other things on their minds.
但他们也许还有其他的事想要做。
What's on Channel 8 now?
现在8频道播什么节目？
As it is only six feet across, it is barely noticeable.
仅6英尺宽，很难被发现。