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- You must keep at it. 一口吃不成胖子。
- The reform has been going well, and we must keep at it, we must continue on this path. 改革的势头好，要坚持搞下去，这个路子必须走。
- The reform has been going well,and we must keep at it,we must continue on this path. 改革的势头好，要坚持搞下去，这个路子必须走。
- I'll meet you there, but you must keep time. 我将在那里和你碰头，但你要准时来。
- Come on,you can do that. Keep at it. 加油，你做得了。加油干！
- If you make a promise, you must keep it. 假如你答应了，就必须做到。
- Come on, keep at it, you've nearly finished! 加油, 别松劲, 你眼看就完成了!
- Whatever may happen, you must keep calm. 不论什么事发生，你必须保持冷静。
- You just keep at it day after day. That's all! 你只要每天持续不断地练习。就这样而已!
- You must keep your mind on your work. 你必须专心工作。
- Come on, you can do that. Keep at it. 加油，你做得了。加油干！
- You must keep your clothes clean. 你必须保持衣着整洁。
- You must keep your dog on a lead in the park. 在公园里要牵著你的狗。
- I knew if I kept at it I should succeed. 我知道如果我坚持下去就会成功。
- You must keep to your bed for at least a week. 你必须至少卧床一周。
- If you want to succeed, you must stick at it. 如果你想成功的话,你就必须坚持做下去。
- If a massive war breaks out and we have to fight,we will have to suspend our efforts to fulfil this task,but otherwise,we must keep at it consistently and devotedly. 如果发生大规模战争，要打仗，只好停一停了。除了发生这种情况，我们一定要按照这条路线专心致志地、始终如一地干下去。
- If you make a promise you must keep it. 你一旦许下诺言就必须要遵守。
- If a massive war breaks out and we have to fight, we will have to suspend our efforts to fulfil this task, but otherwise, we must keep at it consistently and devotedly. 如果发生大规模战争，要打仗，只好停一停了。 除了发生这种情况，我们一定要按照这条路线专心致志地、始终如一地干下去。
- You must have worked very hard at it. 你一定花了很大劲。
