HSK 4
加油
jiāyóu动
to add oil; to top up with gas; to refuel; to accelerate; to step on the gas; (fig.) to make an extra effort; to cheer sb on
比赛时同学们为我加油。
Bǐ sài shí tóng xué men wèi wǒ jiā yóu.
My classmates cheered for me during the competition.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 4.