HSK 7-9
关节
guānjié名
joint (physiology); key point; critical phase
运动前要充分活动膝关节。
Yùn dòng qián yào chōng fèn huó dòng xī guān jié.
Move your knee joints thoroughly before exercising.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.