He could easily be hooked.

他容易上钩。

Once you play it you'll be hooked.

一旦你玩它你会上瘾。

Once you use it for a few days, you'll be hooked.

一旦使用了几天后，你就会上瘾。

I believe you will be hooked on collecting stamps.

相信你一定会迷上集邮的。

Once you get started you will be hooked on Ultimate.

一旦你开始尝试，就会对极限飞盘入迷。