1. 专心致力于：astronautical 太空航行学的 | dedicate oneself to 专心致力于 | hank for hank [航海]两船齐头并进 [喻]平等的 同速的

2. 致力于：correspond to 与...相应 | dedicate oneself to 致力于 | deprive of 剥夺...

3. 把自己用于;赋予自己：Declaration of Independence独立宣言 | dedicate oneself to 把自己用于;赋予自己 | defend oneself against对...为自己辩护

4. 致力于某事：32,像样的(体面的)工作 a decent job | 33,致力于某事 dedicate oneself to | 34,分担责任 share the responsibility