黎明前的湖面宁静而祥和。

The lake is peaceful and serene before ___dawn.

电动汽车的普及标志着环保交通时代的开始。

The rise of electric cars marks the ___dawn of eco-friendly transportation.

直到他看见账单才明白自己花了很多钱。

It ___dawned on him how much money he had spent when he saw the bill.