难闻的的英文：
foul ;unsavoury

参考例句：

Having a bad smell;malodorous.
难闻的;恶臭的

Kerosene smells horrible.
煤油很难闻。

A nasty smell
难闻的气味

What is that horrid stink?
什么味道那么难闻？

It smells foul .
这东西恶臭难闻。

For example, the production of short-chained fatty acids from fats renders butter rancid and unpleasant odors.
例如,脂肪降解产生的短链脂肪酸使奶油产生腐败难闻的气味。

Too frowzy to smell
臊腥难闻

What a disgusting smell!
多么难闻的气味!

The rank odour of a sheep is hard to smell
膻腥难闻

The foul odor penetrated the entire house.
难闻的臭气弥漫于整个房间。

foul是什么意思：
adj. 难闻的；污秽的；淤塞的；邪恶的；犯规的
v. 犯规；弄脏；缠结
n. 犯规
adv. 不正当地

To cause to decay and have a foul odor.
使…腐烂导致腐败并发生恶臭

Murder is a foul deed.
杀人是邪恶的行为。

They dredged that foul chimney.
他们疏通了阻塞不通的烟囱。

The footballer was cautioned for a foul on an opponent.
那个足球运动员因对对手犯规而受到警告。

They fouled the water by throwing in garbage.
他们向水中倾倒垃圾弄脏了水。

unsavoury是什么意思：
adj.不好的，令人讨厌的