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...the trajectory of an artillery shell.是什么意思？

...the trajectory of an artillery shell.

一枚炮弹的弹道

相关词汇
the trajectory of an artillery shell

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

trajectory

n. [物]弹道，轨道，[几]轨线；

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；

artillery

n. 炮，大炮，炮兵部队，炮术，〈美俚〉防身武器；

shell

n. （贝、卵、坚果等的）壳，外壳，炮弹，（人的）表面性
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You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
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他坐在那儿，听我陈述解雇他的理由。
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因此，汽车制造商面临着怎样向新顾客树立产品形象的大难题。
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不大可能叫你做什么太费劲的事儿。