spend on

How long did you spend on your homework?(你做家庭作业用了多长时间？)

The less you eat, the less money you will spend on food.(你吃的越少，你在食物上的花费就越少。)

We have to account for every penny we spend on business trips.(我们出公差所用的每一分钱都得报清楚。)

At McDonald's, customers will spend on average three minutes and nine seconds from the time they place their orders until they receive their food.(在麦当劳，顾客从下单到收到食物要花费的平均时间为3分9秒。)

How much did you spend on buying a school uniform?(你买校服花费了多少钱？)

Parents also want to save money to spend on other stuff.(父母们也希望可以省下买校服的钱而用于其它的服装。)

For every one hour, they will spend on a spacewalk, astronauts need to train seven hours in the pool.(宇航员在太空漫步中花费的每一个小时，都是他们在泳池里训练7个小时换来的。)

I don't have a lot of time to spend on my hair.(我没有太多时间花在打理我的头发上。)

Researchers admit that their study does not answer the question of how much businesses ought to spend on CSR.(研究人员承认，他们的研究并没有回答企业应该在承担企业社会责任上投入多少的问题。)

In her opinion, there is a complex relationship among children's progress, the type of toys they are given and the time parents spend on them.(在她看来，孩子的成长、他们得到的玩具类型和父母花在玩具上的时间之间，有着复杂的关系。)