submerge

海豚经常潜到水下寻找食物。

Dolphins often ___submerge to search for food underwater.

他试图通过疯狂购物来完全压抑自己的愤怒情绪。

He tried to ___submerge his anger by going on a shopping spree.

科学家将设备浸入海水中以收集数据。

Scientists ___submerge the equipment in seawater to collect data.