Tetracyclone
四环酮
🗣️ 情景例句
We are prepared for the worst.
我们已有最坏的打算。
My overcoat is red.
我的大衣是红色的。
As Fred was going in the same direction, he walked along with the tourist.
因为游客与弗雷德走的是同一个方向，他便与游客一道同行。