There exists a great quantity of coal resources under "Three Unders" in some coal mine.

某煤矿因“三下”环境积压了大量煤炭资源。

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So he started doing Criss-Crosses, Side Swings, Double and Multiple Unders in-between his sessions.

所以他开始玩交叉跳，单边，双重，多重种类。

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Apparently, pop-ups and pop-unders now represent less than 1 percent of all display AD impressions, thanks to pop up blockers.

显然，得益于阻止弹出功能，弹出式或隐藏弹出式广告如今在全部陈列广告的观看中只占据不超过1%的份额。

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Whitebeam trees marked the path to right and left, with their grey-green upper leaves and their sharp silver unders.

BBC: England��s ghostly South Downs Way

Simply put: many such deals are take unders, at liquidation values.

FORBES: 8 Small Bank Stocks On Sale

Ireland were relying heavily on O'Gara's up-and-unders to advance downfield, although O'Sullivan's men did look considerably more fired up than for their matches against Namibia and Georgia.

BBC: France 25-3 Ireland