当长辈规劝晚辈做事要考虑后果，不可冲动，以免导致不可挽回的损失时，常常说要三思而后行。
三思而后行，源于《论语》，意思是多次考虑再行动（think twice before you do），形容做事小心，小心稳妥。与英文谚语look before you leap意思相近，表示carefully consider the possible consequences before taking action。
例句：
假如你目前欺骗你的老板，你觉得一旦他发现后会发生什么？我想说，三思而后行！
If you deceive your boss now, what do you think will happen if he finds out about it? I mean, look before you leap!
我不是说你不应该签那套公寓的租约。我只不过说你应该三思而后行。
Im not saying you shouldnt sign the lease for that apartment. Im just saying you should look before you leap.
