知足知不足m
害怕的英文是fear，afraid是adj. 害怕的；担心的。
双语例句：
1那人几乎害怕得说话语无伦次。
The man was almost incoherent with fear.
2房子的空寂并未使她感到害怕。
The silence and emptiness of the house did not scare her.
3年轻人害怕结婚，所以他们同居。
Young people are afraid to get married, so they shack up.
4他们因为害怕报复而不想作证。
They did not want to give evidence for fear of reprisals.
5人们害怕在深夜乘坐公共汽车。
People are scared to use the buses late at night.
6我非常害怕，以至不知如何是好。
I was that scared I didn't know what to do.
7他之所以害怕，证明是有原因的。
His fears proved justified.
8他们的好运已经结束。不过，别害怕。
Their luck had simply run out. Still, never fear.
