1、constant
持續不斷的;重復的;一直存在的
She suggests that women are under constant pressure to be abnormally thin.
她暗示說女性總是處在保持身材異常瘦削的壓力之下。
Inflation is a constant threat.
通貨膨脹始終是個威脅。
恒定物;常數；常量；常項
In the world of fashion it sometimes seems that the only constant is ceaseless change.
在時裝界，有時似乎唯一永恒不變的東西就是不斷的變化。
Two significant constants have been found in a number of research studies.
若干研究已經發現了兩個重要常量。
2、contribute
(為…)做貢獻
The three sons also contribute to the family business.
這3個兒子也為家族事業做出了貢獻。
I believe that each of us can contribute to the future of the world.
我相信我們每一個人都能夠對世界的未來有所貢獻。
捐獻;捐助;援助
The US is contributing $4 billion in loans, credits and grants.
美國將提供40億美元的信貸和贈款。
They say they would like to contribute more to charity, but money is tight this year.
他們說他們很想捐獻更多的錢支持慈善事業，但是今年的錢非常緊張。
促成;促使；是導致…的原因之一
The report says design faults in both the vessels contributed to the tragedy.
報告說兩艘船存在的設計缺陷也促成了這場悲劇的發生。
Stress, both human and mechanical, may also be a contributing factor.
來自人的和機械方面的壓力可能也是一個因素。