严厉的的英文：
acrimonious
castiron
crucial
dear
dour
harsh
heart-searching
heavy-handed
ironhanded
perishing
poignant
pungent
rigid
rigorous
severe
stern
stiff
strict
stringent
tight

参考例句：

A stiff penalty.
严厉的惩罚

Be stern to sB.
对某人严厉

With severity
严厉[格]地

A severe reprimand or expression of anger
严厉的惩罚或愤怒的表现.

To scold sharply;berate.
严厉谴责;训斥

With severity;harshly.
严厉地;粗鲁地

He's cutting up.
他受到严厉的批评。

Her face wore a grim set look.
她脸上显出严厉、木然的神情。

We should inflict severe chastisement on criminals.
我们应该对罪犯施加严厉的惩罚。

Her face wore a grim, set look.
她脸上显出严厉、木然的神情。

acrimonious是什么意思：
adj. 严厉的，辛辣的，刻薄的

The dispute was settled without acrimony.
这场争论未剑拔弩张而获解决。

The acrimony of his remarks alienated his audience.
他说话尖刻，这使观众和他疏远了。

His tendency to utter acrimonious remarks alienated his roommates.
他老是说话尖刻，使同寝室的人和他疏远了。

castiron是什么意思：
a. 铸铁制成的,不屈的,严厉的

He is a man of cast-iron will.
他是一个意志刚强的人。

I have a small fireplace with a cast-iron surround.
我有一个带铸铁边饰的小壁炉。

Some people like to brag that they have cast-iron stomachs.
有些人总喜欢夸耀他们的胃口，说好得跟钢铸铁打的一般。

crucial是什么意思：
adj. 至关重要的，关键性的；严酷的，艰难的

Salt is a crucial ingredient in cooking.
盐是烹调的一种重要材料。

The lack of clarity is especially crucial.
缺乏透明度是关键。

The foreign market was increasingly crucial.
国外市场越来越重要了。