“机不可失，失不再来”这句话在英语中可以翻译为 “Opportunities never come twice.”

这句话强调了抓住机会的重要性，提醒人们在面对机遇时不要犹豫不决，否则一旦错过，就很难再遇到同样的机会。在英语，类似的谚语还有 “Strike while the iron is hot”，意为“趁热打铁”，也是鼓励人们及时行动的意思。

1. Opportunities never come twice.

2. You should seize the opportunity while it’s still there.

3. When an opportunity comes, don’t let it slip away.

4. Don’t let the chance pass you by.

5. When the opportunity arises, grab it with both hands.

1. Opportunities never come twice. So when the chance to study abroad comes, you should take it.

机会难得，所以当出国留学的机会来临时，你应该抓住它。

2. You should seize the opportunity while it’s still there. Otherwise, it might be gone forever.

你应该趁机会还在的时候抓住它。否则，可能永远都不会再有了。

3. Don’t let the chance pass you by. It might be the only opportunity you get in your lifetime.

不要让机会从你身边溜走。这可能是你一生中唯一的机会。

4. When the opportunity arises, grab it with both hands. Don’t be afraid to take risks.

当机会出现时，要紧住它。不要害怕冒险。

5. Strike while the iron is hot. Now is the perfect time to start your own business.

趁热打铁。现在是开始你自己的事业的最佳时机。

“机不可失，失不再来”这句话在英语中可以有多种表达方式，关键是要根据具体情境选择最合适的表达。