hard and fast = fixed and sure
明確的，固定的
It is impossible to make any decisions that are hard and fast.
現在做一些明確的決定是不可能的！

one and only
唯一的
This guy is the one and the only person I love!
這個男人是我唯一愛的人！

No pain, no gain.
沒有痛苦就沒有收獲

Grasp all, lose all.
抓住所有就失去所有
If you grasp all, you will lose all who are close to you!
如果你誰都想抓住，那你就會失去身邊最重要的人！

heart and soul
傾注全力
If you put enough heart and soul into something, you will succeed for sure!
你傾注你的全力在某一件事情上，你一定會成功！

by fair means or foul
不擇手段

forgive and forget
既往不咎
Would they forgive and forget？
他們會既往不咎嗎？