Ya
辅助 Assistantabbr. 年轻人（young adult）；偏航轴（yaw axis）
🗣️ 情景例句
... Oh, oh, I see.... Oh ... certainly.
……嗯 嗯 我知道了。……嗯……一定。
It's earier to run down the hill than go up.
下山容易上山难。
Yesterday morning she came into class as usual.
昨天早上，她像往常那样走进教室。