To trust someone in English is to have confidence in their reliability, truthfulness, and ability. This phrase comes from the Old English word "trust," which meant "firm belief in the reliability, truth, or strength of someone or something."

Here are some examples of this phrase in English:

"I trust my parents to always do what's best for me."

"She has earned my trust by consistently showing herself to be honest and reliable."

"I don't trust him because he has betrayed my confidence in the past."

In Chinese, you can say "信任某人" to express this idea. Here are some examples of this phrase in Chinese:

"我信任我的父母总是会为我做出最好的选择。"

"她通过一直表现出诚实和可靠的态度赢得了我的信任。"

"我不信任他，因为他曾经背叛过我的信任。"