Liquid ammonia, mainly used as refrigerant or to make Ammonium and nitrogen, is an important yet dangerous chemical.

液氨主要用作制冷剂及用于制取铵盐和氮肥，是化学工业中一种重要的、存在危险性的化学品。

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What a powerful (yet dangerous) tool that can be for people who seek to experience the control they lack in their personal life.

对于那些想控制自己生活隐私的人来说这是一个多么有用而危险的工具啊。

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Its subject was cholesterol, the vital yet dangerous yellowish substance whose level in the bloodstream is directly affected by the richness of the diet.

研究对象为胆固醇，存于血液内部的一种既有益也有害的微黄色物质，其含量受丰富的饮食影响。

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Yet just because something is dangerous does not always mean it is all bad.

VOA: special.2009.08.25

At this stage of the journey, the migrants are still relatively close to their homes in Central America,and have yet to face the most dangerous parts of the trip.

VOA: standard.2009.09.01

Recently, Chavez crossed yet another dangerous line: curtailing freedom of the press.

CENTERFORSECURITYPOLICY: "Fixing" US-Latin American relations

And it may yet prove a dangerous one for Brazil, if not necessarily for Mr Cardoso's hopes of re-election.

ECONOMIST: Brazil

Yet during the dangerous Suharto years few people had resisted the regime's coercion more consistently and cleverly than the man his fellow Indonesians call Gus Dur (Gus is a term of respect, Dur is short for Abdurrahman).

ECONOMIST: A Survey of Indonesia