by night

基本解釋

The enemy fled in disorder by night.
敵人趁黑夜狼狽潰逃。
《新英漢大辤典》
And she danced, and must dance, over fields and meadows, in rain and sunshine, by night and day; but at night it was the most fearful.
她跳起舞來，而且不得不跳到田野和草原上去，在雨裡跳，在太陽裡也跳，在夜裡跳，在白天也跳。最可怕的是在夜裡跳。
By night they roost in the gently flowing shallows of the Platte, shin-deep in cool water, or else on sandbars, giving them warning against any predator that might come splashing out.
在夜裡，它們棲息在普拉特河緩緩流動的淺水処，呆在沒腿的涼爽河水中或沙洲上，因爲(wèi)濺起的水花會警告它們，可能有捕食者來了。
xianguo.com

They ride around the park in their bus, visit several places and are back in their Las Vegas hotel by night.
By day I find no relief, nor repose by night.
我白天不能放松，晚上又不得安息。
耶魯公開課 - 舊約導(dǎo)論課程節(jié)選
Then shalt thou have relief by day and rest by night."
那麼你便可以白天放松，晚上安息了“
耶魯公開課 - 舊約導(dǎo)論課程節(jié)選

The proposed site is here in Copacabana, fabled for its beach by day, sex by night.
NPR: Plans for Sex Museum Create an Uproar in Rio