Pacesetting
a. 定步速的,定速度的,带头的,领头的
🗣️ 情景例句
Good night, Grandpa.
晚安， 爷爷。
My sister is the oldest.
我的姐姐是最大。
It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.
不久，一架直升飞机飞抵飞机失事现场，来搭救这几个幸存者。