his role was to punch tools, such as iron, wood, bricks and coal mining long drill bit. decoration is also used in the impact of drilling. open wells, exploration using the evolution of twist drill bits are all made. actually super-twist.
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open quantum wells 开腔光量子阱
Some wells are vast, open craters with hundreds of steps paving each sloping side, often in tiers.
有些井是露天的巨坑，每个斜边都有几百级台阶，通常是一层一层的。
Exploiting shale also requires drilling lots of wells-something that might prove harder in densely populated Europe than in America's wide-open Spaces.
勘探页岩同样需要在很多地方钻井，但是相比美洲大片的开阔地域，欧洲大陆人口密集，所以在欧洲钻井勘探可不是一件容易的事。
I thought I played a great Australian Open but just wasn't able to win it, and then losing in the semis at Indian Wells [Calif.] and Miami, the media came down hard on me.
我认为我的澳网球打得还可以，可就是没赢，印第安维尔斯和迈阿密，都止步于半决赛，媒体对我横坚不是。
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