It is hard for an empty sack to stand upright.

对于一个空口袋来说，直立起来是困难的。

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The EVO has a tiny kickstand to stand upright for video conferencing.

EVO这一型号还配备了一个微型支架以便立置供视频会议使用。

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A cylinder is a hollow tube with a closed concave base that permits it to stand upright.

钢瓶是中空的管道，封闭的底部是凹入的，这样可以直立起来。

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The major averages kept rising into nose bleed thin air, but the Ag names were struggling to stand upright.

FORBES: POT Is Going Up In SMOKE

The mount allows your iPad to stand upright and be used as monitor.

ENGADGET: Movie Mount turns your iPad 2 into a serious video-making machine

It bounced down off the upright and the referee's assistant allowed it to stand despite the shot clearly not crossing the line.

BBC: Egypt 3-1 Cameroon (aet)