Plastic straws are by no means the biggest source of plastic pollution, but they've recently come under fire because most people don't need them to drink with and, because of their small size and weight, they cannot be recycled.

塑料吸管绝对不是塑料污染的最大来源，但是它们最近饱受抨击，因为大多数人不需要用它们来喝饮品，也因为它们尺寸小、重量轻，无法回收利用。

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But when they looked for the source, there was nothing there, no planet, no star.

但是当他们寻找其源头时，却发现那里什么都没有：没有恒星，也没有行星。

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No single source of traffic is wholly "safe," but a diversified portfolio has much less associated risk.

没有任何一种流量来源是绝对“安全”的，但是把鸡蛋放在不同的篮子里可以有效的降低风险。

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There is in Frost no God, no transcendental source of guidance or consolation, nothing out there in the world but the material conditions of our circumstances.

在弗罗斯特的诗里，没有上帝，没有卓越的指引和安慰，这个世界里什么都没有,除了我们生活环境的物质条件。

耶鲁公开课 - 现代诗歌课程节选

But the No 10 source rejected suggestions Mr Hayes's appointment demonstrated difficult current relations between the prime minister and the parliamentary party.

BBC: John Hayes

PWC's Richard Parker said social housing was in a "stark position" as additional investment was necessary to maintain the quality of the housing stock and the reputation of the Housing Executive, but there was no convenient source which the Executive could use as funding.

BBC: Social Development Committee

But a knowledgeable source said no one was in custody.

CNN: Ricin scare rattles Washington