His friends betray him.
他的朋友出卖他。
Confusion betrays the guilty.
神色慌张必有鬼。
If you treat Jack as a friend, he will never betray you.
如果你把杰克当作朋友, 他就绝对不会背叛你。
"We are sorry to have betrayed the trust of our customers," Daihatsu President Soichiro Okudaira told a news conference on Wednesday.
They are under the illusion that, by clutching to the United States, they can be even more utterly brazen in their provocative attempt to seek "independence" and betray the interests of the Chinese nation.