to be alert and careful about something dangerous
保持警觉，小心危险的事情
"Watch out! There’s a car coming!"
"小心！ 有车来了！"
to organize activities jointly across different areas or tea...
to reach a negotiated settlement or deal
to start allowing international trade or economic exchange
to cooperate or coordinate efforts with others
to save money for the future
to support or defend someone as part of a group
