首先是对必要原因(necessary cause)、充分原因(sufficient cause)和贡献原因(contributory cause)的区分。必要原因和充分原因都属于病原因素,它们对症状因素是有贡献的,所以都属于贡献原因。
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充分病因与必需病因 (1)充分病因(sufficient cause): 一组必然导致疾病发生的最低限度状态或 事件。最低限度是指一组因素中的任何一 部分都是不可缺少的。
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to some other sufficient cause 因其它充分因由所致
There was nothing strange really: they themselves were sufficient cause.
其实一点儿都不奇怪,他们本人就是充足的推动力。
Neither party shall cancel the contract without sufficient cause or reason.
双方均不得无故解除合同。(如果译成“…没有原因和理由”的话,就不够精炼。)
Although the agent must be present for a disease to occur, it alone is not a sufficient cause.
虽然疾病发生是必须有病原存在,但病原存在并不是唯一的原因。
He actually recognized and, of course, many people recognized that this jellyfish was fluorescent, and he isolated the actual protein, and determined and proved that this protein was sufficient to cause this fluorescence.
他认识到了,当然,很多人都认识到了水母是有萤光的,它分离出了这种蛋白质,测定了它并证明,这种蛋白质会导致萤光。
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