?专心致力于
...专心致力于 deep in ;devote her to ;devote his to ;devote my to ;devote our to ;devote their to ;devote your to ;devoted her to ;devoted him to ;devoted me to ;devoted them to ;devoted us to ;devoted you to 专心致志于 apply one's mind to ;apply themselves to ;bend on ;bend upon ;commit oneself to ;set my heart...