围棋术语，也称“收气”。双方没有成活的子相互包围，在对杀（或形成双活）的过程中，使对方子的气数不断缩短的着法，称为“紧气”。
不过，尽管天然气供应或将趋紧，但所有预测都认为在中长期时段上，仍然会有大量天然气。
But though gas supply may tighten, there is still, by all estimates, a lot of it around for the medium to long term.
“影响世界”，这个想法是不是会使你一时里有点气紧——仿佛就要征召你去和平队或要你收养印度尼西亚的某个孤儿似的。
Does the idea of making an impact on the world cause you to hyperventilate a bit - like you might have to join the Peace Corps or adopt an orphan from Indonesia?
一些地方天然气供应趋紧，部分地方已限制或停供生产用气。
The supply of natural gas is tightening in some localities, with restricted or suspended supply of natural gas for production.
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