公司已将此项目预算的上限设定为五十万英镑。

The company has set ___the ___upper ___limit for this project's budget at half a million pounds.

我愿意支付每月高达1200英镑的租金，但那是我的绝对上限。

I'm willing to go up to £1,200 per month in rent, but that's my absolute ___upper ___limit.

会议发言人的演讲时间上限为二十分钟。

Speakers at the conference will have an ___upper ___limit of twenty minutes for their presentations.