知的

In fact, HBV is regarded by many scientists to be second only to tobacco as a known human carcinogen.

事实上，乙肝病毒是许多人认为，科学家们将仅次于烟草作为一种已知的人类致癌物质。

Among these, sodium nitrite is a known carcinogen.

其中，亚硝酸钠是已知的致癌物质。

A known carcinogen, it presents a public health problem when even trace amounts are present in drinking water.

做为已知的一种致癌物，即使在饮用水中仅有痕量存在也会引起公共健康问题。

In part because this is so easy—it has emerged, for example, that Ms Whitman did not vote for much of her adult life and only became certifiably Republican suspiciously recently.

部分原因是Ms Whitman 很容易被找到攻击点-----比方说Ms Whitman最近刚刚为人所知的一些事，其在成年之后大部分时间都没参与过投票，却是到最近又神不知鬼不觉地突然变为共和党人。

Every cetacean known to man is endangered,just by going anywhere near Japan.

任何人类已知的鲸类动物，都因经过日本附近而濒临灭绝。

Every cetacean known to man is endangered just by going anywhere near Japan.

所有人类已知的鲸类只要靠近日本，就将遭受灭顶之灾。

It has no known connection to allergy or cleanliness.

它没有已知的连接到过敏或清洁。

That's all I know, welcome to commend

这些是我所知的，欢迎赞赏。

Life is an opportunity for you to know experientially what you already know conceptually.

人生是个机会，可让你在经验上得知你在观念上已知的东西。

What is known is that HIV has been transmitted through fellatio, cunnilingus, and anilingus.

目前已知的是，吮吸阴茎，舔弄阴道和肛门都可以传染HIV。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。