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半公里
1、a half million───50万
2、half a dozen───adj.半打，六个
3、half a kilo───半千克；半公斤
4、and a half───质量上乘; 非同小可的，十分精彩；了不起的；而且比这多得多
5、a half───一半；二分之一
6、half a year───半年；半载
7、half a month───半个月
8、half-and-half───n.两者各半之混合物；（加入咖啡、牛奶等的）稀奶油；adv.各半，对等地；adj.两种成分各半的；不明确的
9、kilometer───n.[计量]公里；[计量]千米（等于kilometre）
1、Perhaps half a kilometer across, it was the largest object ever observed to pass that close to Earth.───它直径约半公里，是目前观测以的以如此相近距离通过地球的最大物体。
2、half a kilometer away from here.───这儿半公里远。
3、One by one, rescuers in Chile are freeing 33 miners who have been trapped more than half a kilometer underground for more than two months.───智利救援人员正逐个的把33名被困矿工解救出来。他们已经被困在半公里多深的地下两个多月。
4、The eight of us reconvened, advanced about half a kilometer, and repeated the search to both sides of the main track, in vain.───我们8个人又会合了，向前走大约半公里，在主滑雪道两边又搜索起来，但是没有找到。
5、THREE people running northward through moon shadows in the ForbiddenForest were strung out along almost half a kilometer.───三个人在月影斑驳的禁林中向北狂奔，拉成了将近半公里的一条线。
6、I can see everything from my house - smoke, bombardment, it's just very close to where we live and maybe half a kilometer away.───我可以从我房子这看到所有的东西-浓烟，爆炸，这离我们住的地方很近可能只有半公里。
7、Your cousin fell from half a kilometer up ! She 's dead . Just as you'd be if I took you to battle .───你们的表妹从一千米高空落下！她已经死了。如果我带你们去战场，你们也会死。
8、Information can be sent over half a kilometer away in a very short time through this mechanism.───通过这种机制，在极短的时间里，信息可以跨越半公里以上。
9、My home is half a kilometer away from here.───我家离这儿有半公里。
1、After running half a kilometer, I began to feel tired.
2、One li is equal to half a kilometer.
3、A shark can smell blood at a distance of half a kilometer.