降低: reduce; cut down; abate; deb ...偶然事件: accident; a chance event非偶然事件: noncontingent event偶然事件: accident; casus fortuitus; chance event; contingent event; fortuity; happenstance; incident; random events事故,故障,偶然事件: accident事故;偶然事件;故障: accident偶然事件反应计划: contingency response plan偶然事件结果冲程: event偶然事故: contingence; contingent; fortuitous event偶然事故表: contingency table必然事件: certain event; sure event突然事件: emergency自然事件: natural event偶然事故,偶然损伤。: accident偶然事故的损失: loss from accident偶然事故预防规划: contingency planning允许的偶然事故,应急费用: contingency allowance不测事件;偶然性;非常时期: eventuality偶然: accidental; fortuitous; casual; incidental; occasional; in case of accident; by coincidence; by chance; accidently; by accident; chance; chance to; have a chance to; happen to; it just so happened that ...: 偶然现象 accidental [fortuitous] phenomena; 偶然事件 accident; a chance event; 偶然原因 an occasional cause; 偶然遇见一个老朋友 run into an old acquaintance; meet an old friend by chance; come across an old friend; 偶然相识的人 an incidental acquaintance; 出现这种问题绝不是偶然的。 the occurrence of such things is by no means fortuitous. 我在伦敦一家小店里偶然发现那件古物。 i struck upon that antique in a little shop in london降低: reduce; cut down; abate; debase; drop; lower; lessening; reducing; reduction; depression; tarnish 降低定额 derating; cut down the norm for; 降低废品、次品率 reduce the number of rejects and seconds; 降低身份 lower one's social status; 降低生产成本 reduce production costs; cut back production costs; lower production costs; reduction in production costs; 降低物价 reduce [cut] the price; 降低物质消耗 reduce material consumption; 降低消耗 cut down [reduce] the consumption of materials; conservation of energy and raw materials; 降低原料消耗 cut down the consumption of raw materials; economize on raw materials自然事故: natural accidents事件: s event事件: event; incident; événement 边境事件 border incident; 国际事件 international events; 意外事件 contingent event; 政治事件 political events; 是哪些关键性事件影响了1979年的能源状况? what key events influenced the energy situation in 1979(偶然)遇见;(偶然)发现: come across降低, 降低价格: reduced price