The scientist was sunk in thought, and didn't notice what was going on around him. 这位科学家陷入了沉思，没有注意到周围发生的事情。
A moat, walled ditch, or hedge sunk in the ground to serve as a fence without impairing the view or scenic appeal. 暗墙; 隐篱用来作栅栏，但又不阻碍视线或景观的护城河，或由墙围住的沟或陷入地中的篱笆
A lot of their money had been sunk in mineral shares that everybody had warned them not to buy. 他们把许多钱冒险投资，用于购买矿物股份了，这以前大家都警告他们不要买。
She just sat there, sunk in depression. 她就坐在那里，情绪十分低落。
