Introne
内含子
🗣️ 情景例句
Some people are afraid of flying, which limits their options when traveling.
一些人十分害怕坐飞机，这也就限制了他们旅行时的选择了。
It is better to wear out than to rust out.
与其锈掉，不如用坏。
We were getting very worried.
我们都非常担心呢。