Hantigen
鞭毛抗原
🗣️ 情景例句
I should be finished packing by then.
到那时候我应该已经整理好行李了。
The man is a piano accompanist.
这个人是钢琴伴奏者。
This race, which went on for exactly four exactly four months, was the last of its kind.
这场比赛持续了整整4个月，是这类比赛中的最后一次，