[yī huìr]
（很短的时间） a little while
after a while
过了一会儿
rest for a while
歇一会儿
Please wait for a moment.
请等一会儿。
We are off for a while.
我们要离开一会儿。
I stayed for a short while.
我待了短短一会儿。
I'll be coming in a moment.
我一会儿就来。
Her moods were very changeable, now laughing loudly, and now sunk in despair.
她的情绪变化无常，一会儿放声大笑，一会儿陷于绝望。
He says one thing one moment and another thing the next.
他一会儿这么说，一会儿那么说。