脚踏两只船 - Chinese Idiom

脚踏两只船

Literally means:

straddle two boats simultaneously

Actually means:

sit on the fence

It figuratively means being connected with two sides or being committed to both sides and will choose one and abandon the other when the right moment comes. It sometimes connoted that one is hesitant in making a choice; or one maies a choice regardless of his commitment to smeone else, therefore this expression implies that one is speculating and ready to breaking his promise. Derogatory.

比喻同时跟两方面都保持联系或都有约定，看事情的发展再决定取舍。有时表明行为人在面临取舍时犹豫不决;有时表明行为人不顾有约在先，而只根据个人利益作出取舍，因而有投机取巧或不讲信誉的意味。具有贬义色彩。