| HSK | Not in HSK |
|---|
| OS o s | (in a soap opera or movie) voice-over that makes a character's unspoken thoughts audible to the audience |
| USB手指 u s b shǒu zhǐ | USB flash drive; see also 閃存盤|闪存盘[shan3 cun2 pan2] |
| USB记忆棒 u s b jì yì bàng | USB flash drive; see also 閃存盤|闪存盘[shan3 cun2 pan2] |
| USB記憶棒 u s b jì yì bàng | USB flash drive; see also 閃存盤|闪存盘[shan3 cun2 pan2] |
| COS c o s | (Internet slang) cosplay; to cosplay; to dress up as |