They are your worst enemies, you know, and they like to make you as unhappy as they can.

你要知道，他们是你最大的敌人，他们会想尽办法让你不高兴。

youdao

We have to learn to be our own best friends because we fall too easily into the trap of being our worst enemies.

我们必须学会做自己最好的朋友，因为我们太容易掉入陷阱，成为自己最凶恶的敌人。

youdao

Charles ought to know that as English history show, it is kings, not republicans, who are the monarchy's worst enemies.

查尔斯应该知道，英国历史表明，君主制最大的敌人是国王，而非共和党人。

youdao

Armed with the most basic tools, technical analysts can be their own worst enemies.

FORBES: Chart Geeks May Finally Get Their Correction

Edinburgh were again their own worst enemies when they went further behind five minutes later.

BBC: Ulster 13-16 Edinburgh

But not even his worst enemies can deny Sorrell his many groundbreaking accomplishments in the industry.

FORBES: Magazine Article