"I would prefer it if you kept your distance from me"
这句话的意思是：我希望你离我远一点。
"Keep your distance" 是一个习语，意思是 "to stay away from someone or something, either physically or emotionally"（在身体或情感上远离某人或某事） 。
例句1：
I think it would be best if we kept our distance for a while.
我认为我们应该保持距离一段时间。
例句2:
Please keep your distance and respect personal space.
请保持距离并尊重个人空间。