奢谈的时候已经过去了，我们必须积极行动起来保护我们的环境。(to take...action)
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世界上主要的几家飞机制造公司竭力制造飞得更快、更远的飞机，以争得更大的市场。(to bush the envelope)
尽管他已经退休5年了，但他在学术界仍然很活跃。(to remain active in)
France-has already pledged billions of dollars in aid next year.
But first, the 53-year-old man would sharethe newswith his family.
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