Step must be taken to reduce the problem to manageable proportions.
必须采取措施将问题缩小到可控制的范围。
Any of various alloys of copper and tin in various proportions, sometimes with traces of other metals.
青铜, 铜锡合金一种不同比例的铜锡合金, 有时加入微量的其它金属
Football hooliganism is now reaching epidemic proportions.
足球比赛中恣意闹事现在已经达到愈演愈烈的地步。
