1. The birds flew cloudward, disappearing into the thick mist.
鸟儿向云里飞去，消失在浓雾中。

2. As the hot air balloon ascended, the passengers looked cloudward and marveled at the breathtaking view.
热气球上升时，乘客们望着云彩，对令人叹为观止的景色感到惊叹。