1 PHRASAL VERB 用泵（或气筒）给…打气 If you pump up something such as a tyre, you fill it with air using a pump. 用泵（或气筒）给…打气 [Also VERB n PREPOSITION]
SYN inflate, blow up, fill up, dilate
2 PHRASAL VERB （尤指通过自我心理暗示）给自己打气，自我鼓励 If you pump yourself up for something, you prepare yourself for it mentally, especially by telling yourself that you can succeed. （尤指通过自我心理暗示）给自己打气，自我鼓励 [informal]