Bowguide
弓形导板
🗣️ 情景例句
We've only been here for a day,
我们到这里仅仅一天，
Mr. Smith is still in his fifties.
史密斯先生仍然50几岁。
why have we had no visitors from outer space yet?
那么我们为什么还未见到外层空间来访的客人呢？