当长辈规劝晚辈做事要考虑后果，不可冲动，以免造成不可挽回的损失时，常常说要“三思而后行”。
“三思而后行”，出自《论语》，意思是“多次思考再行动（think twice before you do）”，形容做事谨慎，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”。
- 如果你现在欺骗你的老板，你认为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。我只是说你应该三思而后行。
I'm not saying you shouldn't sign the lease for that apartment. I'm just saying you should look before you leap.
