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1·This paper proposes several approximation algorithms to improve the solution of snowblower problem.

提出了吹雪机问题的改进近似算法。

2·A man cleans the street with a snowblower after heavy snowfall in the Thuringian Forest in Oberhof, Germany, Thursday, Dec. 2, 2010. AP / Jens Meyer

在大量降雪后，一男人用吹雪机清理街上的积雪。

3·He loves bundling himself up, heading out in the cold, and moving snow around - can you even imagine someone who sings when running their snowblower?

他喜欢大雪天把自己裹得严严实实的，出门扫积雪。你能够想象有人会一边推动吹雪机一边唱歌吗？