我们都知道strict, severe, rigid, rigorous都有“严格”的意思，那么先来考一下大家，
Mr. White很固执，坚持对下属严格要求。一旦不能达到他严苛的标准，他们就要接受严厉的批评。
这句话里面包含以上四个同义词，应该怎样对应翻译？下面逐一分析,
Trump表情包之一
Strict
You use strict to describe someone who never does things that are against their beliefs.
通常用于指对人的行为要求符合规范,一般译为“(要求)严格的，恪守信条的”，强调人对规则的遵守
a strict vegetarian 一个严格的素食主义者
a strict teacher 一位严格的老师
对某人严格”用介词 with - be strict with sb
My parents were very strict with me.
父母对我要求非常严格。
Our manager is very strict with us.
我们的经理对我们要求很严格。
在某方面严格用介词 in - be strict in sth
The engineer is strict in his work.
这位工程师对工作要求严格。
Trump表情包之二
Severe
Severe punishments or criticisms are very strong or harsh;
Not kind or gentle in treatment.
多指由于客观需要而不能轻易改变规则和要求, 完全没有松弛、轻浮、柔软可言，含有冷酷无情之义, 一般译为“严厉的, 尖锐的, 苛刻的”
1. 形容人及其面容、行为、思想、言论、态度
severe criticism 严厉的批评
a severe judge 严厉的法官
a severe manner 态度严肃
I got a severe telling off for not phoning him.
我因为没给他打电话，被狠狠训斥了一顿。
Was his mother too severe on him?
她的母亲是不是对他太严厉了?
2. 形容与人有关的事物, 如作风、法律、刑罚，伤势等
a severe sentence 重判重刑
severe pain 伤势严重
He's suffering from severe mental disorder.
他患有严重的精神病。
This is a severe test.
这是一次严峻的考验。
3. 形容天气和环境的恶劣
a severe storm 一场剧烈的风暴
a severe quake 严重的地震
severe recessions 经济衰退
severe competition 激烈的竞争
Trump表情包之三
Rigid
incapable of compromise or flexibility;
incapable of adapting or changing to meet circumstances.
特指没有灵活性、机动性的"严格"
1. 形容法律、制度或体系、思维等一成不变、刻板的，僵化
rigid operation 严格的操作
Hospital routines for nurses are very rigid.
医院中护士的日常工作非常刻板。
2. 形容人的固执、顽固
My father is very rigid in his thinking.
我父亲的思想非常顽固。
He is very rigid in his ideas on marriage.
他对婚姻的看法一成不变。
3. 形容(常因震惊，害怕，冰冻) 身体僵直的，不能动弹的
a rigid body 僵硬的尸体
She was rigid with fear.
她害怕得全身僵住了。
I went rigid with shock.
我惊得僵在那里。
Trump表情包之四
Rigorous
rigidly accurate; allowing no deviation from a standard;
demanding strict attention to rules and procedures.
从英文字面解释可以看出，针对的多是“标准，规则或程序”，所以rigorous的“严格”带有“一丝不苟的，严密的，缜密的”之意。
rigorous discipline 严格的纪律约束
rigorous application of the law 严密的法律申请流程
The planes have to undergo rigorous safety checks.
飞机必须经过缜密的安查。
The work failed to meet their rigorous standards.
工作没有达到他们的严格标准。
总的来讲，strict, rigid和rigorous都可应用在rules, laws, requirements, standards方面，只是使用普遍频率多少和强调侧重各有不同。
最后解答文章开头的翻译问题，
Mr. White很固执，坚持对下属严格要求。一旦不能达到他严苛的标准，他们就要接受严厉的批评。
Mr. White is very rigid in being strict with his subordinates. Once fail to reach his rigorous standards, they will suffer a severe criticism.
