In each set, the first plague is accompanied by a notation of the time in the morning. It's also introduced by God's speech, when God says, "Present yourself before Pharaoh," and to do this in the morning.

在每一组中，第一次瘟疫都是发生在早上,可以从上帝的话中看出来，上帝说，今天早晨，“到法老面前去“

耶鲁公开课 - 旧约导论课程节选

You have a wind that blasts from God's nostrils, the waters stand straight like a wall, and at a second blast, the sea then covers the Egyptians, and they sink like a stone in the majestic waters.

从上帝的鼻孔里吹出来一阵狂风,水墙骤起，第二阵狂风吹起,海水淹没了埃及士兵，他们就像石头一样沉入水底。

耶鲁公开课 - 旧约导论课程节选