This is the 5227th most frequent Chinese word.
上车
"Get on a vehicle."
The word '上车' here means 'to board a vehicle'.
我们在车站上车。
We get on the vehicle at the station.
The word '上车' here implies urgency in the action of boarding.
请快点上车,我们快迟到了。
Please get on the vehicle quickly, we are almost late.
'上车' here signifies the action of boarding with the added nuance of caution or consideration.