The same effect was found among those who held a cool pack to their forehead, whereas those who held a warm or room-temperature pack yawned while watching the video.

将冰袋敷在前额上也能起到类似的效果，而在观看视频时用暖水袋或室温水袋敷在额头上的人却无法避免打呵欠。

youdao

Whereas meals while traveling off-island or overnight are considered payable, any personal meals purchased while doing local sales calls are not.

在海上整晚的旅行，无论在那里吃饭都是可以报销的，若当地没有销售拜访，任何个人用餐均不可报销。

youdao

Whereas every dog lab now tests the cognition of its animals while their human owners are blindfolded or asked to face away, young children are still presented with cognitive tasks while sitting on their mothers' laps.

WSJ: The Brains of the Animal Kingdom