by necessity

基本解释

She learned the trade by necessity and under duress.
因为需要和被迫，她学会了做生意。
Health, by necessity, is a co-product of individual action and the environment we live in.
健康不可避免地成为我们个人行动和生活环境的副产品。
For it is about our actions that we deliberate and inquire, and all our actions have a contingent character; hardly any of them are determined by necessity.
因为这与我们思考和调查的行为有关，而我们的所有行为都有着偶然性，它们就很难由必然所决定。

That will,by necessity, need more troops, not only for the training, but for the mentoring in the field.
And, what we will do next day is we will look at the consequences of such an energetic set up, and rationalize that when ions form, by necessity we must form ionic crystals.
明天我们要做的是,观察一下,这样一个充满活力的创造的结果，然后合理地解释要想得到离子，我们必须先得到离子晶体。
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That doesn't, by the way, happen until 1934 when it became a kind of pronouncement of necessity at the International Soviet Writers Conference on that occasion.
直到1934年4,国际苏联作家会议,发表了类似的声明。
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This will, by necessity limit the sensitivity of this category (i.e. some lead-related deaths are missed).
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