危害性的英文：
perniciousness

Refusing to report or making falsified report on the matters of carriage of harmful polluting goods by vessels.
拒报或谎报船舶载运污染危害性货物申报事项的。

You should bring the harmfulness of mad dogs home to your naughty child.
你应该使你那个调皮的孩子明白疯狗的危害性

Only a few dozen are harmful but the damage caused costs the country more than 57 billion yuan a year.
只有十几种具有危害性,但是它们每年给中国造成的损失达570多亿元。

A small black and white insect (Blissus leucopterus) that is very destructive to grains and grasses.
一种对谷物和草有很大的危害性的小的黑白色昆虫(麦长蝽).

The magnitude of the flood was impossible to comprehend.
这场水灾的危害性是无法了解的

The government is taking measures to draw the fangs of AIDS.
政府正在采取措施消除艾滋病的危害性。

In some way, China youth's political nonparticipation is common and dangerous.
现阶段青年的政治不参与存在着一定的危害性和普遍性。

Agreements about price or price-related matters such as creditor terms potentially are the most serious.
关于价格或诸如信用条件等有关价格事项的协定是极具潜在危害性的。

But UCLA psychologist Andrew Christensen moans, " It's destructive
但是加州大学洛杉矶分校的心理学家安德鲁·克里斯坦森则悲叹道:“它具有危害性。”

An article about the dangers of the new drug has recently been published in the British Medical Journal.
最近，《英国医学报》上发表了一篇关于这种新药的危害性的文章。

The took effective measures to liquidate the pernicious influence
他们采取有效措施肃清流毒。

In short, winter is a tomb, spring is a lie, and summer is a pernicious mirage.
总而言之，冬天是坟墓，春天是谎言，夏天则是险恶的海市蜃楼。

"Business may be troublesome, But idleness is pernicious"
事业虽扰烦,懒惰更害人

An abnormally large red blood cell, especially one associated with pernicious anemia.
大红细胞异常增大的红细胞，特指与恶性贫血有关的 。

But the reforms would strike at the most pernicious, unfair sorts of income disparity
但是改革会触及某些最险恶最不公平的收入悬殊。