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1、vanish
消失;失踪;突然不见
He just vanished and was never seen again.
他就这么消失了，再也没人见到过他。
The aircraft vanished without trace.
飞机消失得无影无踪。
(物种）灭绝;（传统）消亡
Near the end of Devonian times, thirty percent of all animal life vanished.
在泥盆纪末期，30％的动物物种都灭绝了。
all the species of birds that had vanished from Iowa.
艾奥瓦州所有消失了的鸟类物种
2、contribute
(为…)做贡献
The three sons also contribute to the family business.
这3个儿子也为家族事业做出了贡献。
I believe that each of us can contribute to the future of the world.
我相信我们每一个人都能够对世界的未来有所贡献。
捐献;捐助;援助
The US is contributing4 billion dollars in loans, credits and grants.
美国将提供40亿美元的信贷和赠款。
They say they would like to contribute more to charity, but money is tight this year.
他们说他们很想捐献更多的钱支持慈善事业，但是今年的钱非常紧张。
促成;促使；是导致…的原因之一
The report says design faults in both the vessels contributed to the tragedy.
报告说两艘船存在的设计缺陷也促成了这场悲剧的发生。
Stress, both human and mechanical, may also be a contributing factor.
来自人的和机械方面的压力可能也是一个因素。
