They generalized the use of a new invention.
他们推广一项新发明的应用。
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演讲综合
级听力真题训练—新闻报道 Though sales of electric cars have increased in recent years and engineers are constantly looking for alternatives to gasoline, the internal combustion engine is not on the way out, though the inventor of a new hydrogen-powered vehicle disagrees.
虽然电动汽车在近几年来销量走高,工程师
也在寻找替代汽油的
料,但是内

不会从此式微,最起码发明新型氢气动力汽车的发明者不这么认为。
级写作满分模板
级听力真题训练—整套综合