假如你想要砌一块石板地以供休憩，要买一台水泥胶合机需花500块钱，租一天45块，但这种机器你只用一次，以后再也不需要。

Now, imagine that you want to pour a concrete patio. A cement mixing machine costs $500 to buy, or you can rent one for $45 for a day. You will never need that cement mixing machine again.

youdao

假如你想要砌一块石板地以供休憩，要买一台水泥胶合机需花500块钱，租一天45块，但这种机器你只用一次，以后再也不需要。

Now, imagine that you want to pour a concrete patio. A cement mixing machine costs $500 to buy, or you can rent one for $45 for a day. You will never need that cement mixing machine again.

youdao