limit 
英 [ˈlɪmɪt]  美 [ˈlɪmɪt] 
n. 限制；限量，限度；界线

v. 限制；限定

例句：
There is no limit to how much fruit you can eat. 

你吃多少水果没有限制。

Firefighters are being stretched to the limit as fire sweeps through the drought-stricken state. 

火势在这个遭受旱灾的州里迅速蔓延，消防队员疲于应对，接近极限。

Her love for him was being tested to its limits. 

她对他的爱经受着极其严峻的考验。

She has to work within the limits of a fairly tight budget. 

她不得不在相当紧张的预算范围内精打细算。