该当的英文：
deserve; should

参考例句：

was subjected to outrageous cruelty.What is flagrant is glaringly or scandalously reprehensible
被残酷地对待。指的事物是明显或可耻地该当责难的

Their condemnation is deserved.
这等人定罪，是该当的。

He was much and deservedly respected.
他非常受人尊敬而且是该当的。

But what if the outrage is still in the planning stages?
但是，如果暴行尚在筹划阶段该当如何？

You should be an actor you've missed your vocation, ie you are following the wrong career
你应该当演员--你入错行了

What if the evil planned is truly colossal, or may even make retaliation impossible?
如果筹划中的邪恶力量将会大得惊人以致无法反击又该当如何？

deserve是什么意思：
v. 应受，应得，值得

Much of this deserved.
其中许多是值得庆幸的。

Their condemnation is deserved.
这等人定罪，是该当的。

They are in for a grand surprise and a deserved punishment.
等待他们是一场少有的意外和罪有应得的惩罚。

None but the brave deserve the fair.
英雄才能配美人。

A forced kindness deserves no thanks
勉强的善行不值得感谢

should是什么意思：
aux.v. 应该，应当；本应，本当；假如，万一；可能，可以

Should there be a flood, what should we do?
万一发生水灾我们怎么办？

You should do as the law prescribes.
你应该按照法律的规定做。

You should consider his youth.
你应体谅他的年轻。

They should not be a threat to reconciliation.
它们不应当威胁和解精神。

The law should remain in force.
法律应当有效力。