您可以在这里使用earn而不是gain ！因此，说earn their trust是很自然的，在这些情况下，这两个词可以互换使用。示例： I tried to gain their trust by giving them gifts. = I tried to earn their trust by giving them gifts. （我试图通过送礼物来赢得他们的信任。） 示例： She gained their support by telling them about the initiative. = She earned their support by telling them about the initiative. （她通过谈论计划赢得了他们的支持。） => 这句话不太自然，因为我个人没有为此付费。