out of necessity

基本解释

In fact, they will have to melt away -- out of necessity on both sides.
事實上，它們也必須消失---也是出自雙方的需要。
Out of necessity we could develop bacteria to extract resources directly from the regolith — a useful technology for Earth as well.
如果需要，我們可以培養細菌，直接從表土提取資源——這項技術在地球上也非常實用。
If you think about it, you’ve probably created a lot of new traditions out of necessity or convenience, but you hadn’t thought of them as “traditions” at all.
如果你想想，你會發現自己很可能出於必要或是爲了圖方便，已經創造出了一大堆新傳統，但你之前從不認爲它們是“傳統”。

Henderson,who is now 63, says he started to make guitars as a young boy,out of necessity.
They claimed they had acted out of necessity; that was their defense.
但他們聲稱此行爲是迫不得已;,他們這樣辯護。
耶魯公開課 - 公正課程節選
Still, many people have clung to the idea of the Bible as a historically accurate document, many times out of ideological necessity. Many fear that if the historical information in the Bible isn't true, then the Bible is unreliable as a source of religious instruction or inspiration.
但很多人仍堅持聖經是正確記錄歷史的文件,很多時候不是出於意識形態的必要，很多人擔心,如果聖經中的歷史信息不正確，那麽《聖經》,就不再是宗教教育和神霛感應的可信來源。
耶魯公開課 - 舊約導論課程節選

Some forward-looking cities are leading on solving the energy-nexus equation, some out of necessity.
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