I was in love with her—'was' being the operative word.

在I was in love with her这句话中，was是关键词。

《牛津词典》

Please leave quietly ? quietly being the operative word.

请悄悄地离开-“悄悄地”是最重要的。

youdao

Lay low, and expect the energy to change for the better sometime Friday, with 'change' being the operative word.

保持低调，希望你的精力会好起来，或许“改变”是一个有效的词。

youdao

The operative word being virtual since they conversed over the phone and via text.

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The operative word being training.

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