Meaning of yī xià:
一下
(used after a verb) give it a go
Qǐng nǐ shì yīxià.
请你试一下。
Please give it a try.
to do (sth for a bit to give it a try)
Ràng wǒ shì shì yí xià zhè gè yóu xì.
让我试试一下这个游戏。
Let me try this game for a bit.
one time
Qǐng děng wǒ yīxià.
请等我一下。
Please wait for me a moment.
once; in a while; all of a sudden; all at once
Qǐng děng wǒ yīxià.
请等我一下。
Please wait for me for a moment.
Nǐ néng děng wǒ yīxià ma?
你能等我一下吗?
Can you wait for me for a while?
Tā tūrán xiǎngqǐle yī jiàn shìqíng, yúshì zhàn qǐlái zǒule yíxià.
他突然想起了一件事情,于是站起来走了一下。
He suddenly remembered something, so he stood up and walked around for a bit.
Qǐng nǐ bāng wǒ yīxià.
请你帮我一下。
Please help me for a moment.