🗣️ 情景例句
If you want to go sightseeing, a ferry trip is usually pretty cheap.
如果你想观光，坐船通常是比较便宜的。
The student is busy studying math.
这个学生忙于研究数学。
I went further back into the cave and stopped still.
我向前走拐进岩洞，停住不动。