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)
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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.
玛丽从小就盼望着能在中国云南的一个村庄住上几年，现在她缍梦想成真了。(to take up residence)
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