HSK 4
登机
dēngjī动
to board a plane
登机以前请准备好护照。
Dēng jī yǐ qián qǐng zhǔn bèi hǎo hù zhào.
Please have your passport ready before boarding.
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.