spend time on sth.结构用法：
(1)We also spend time on the Japanese business.
我们还探讨了日本业务。
(2)So he spend time on solving problems, rather than used to create new problems.
(3)They spend time on career planning.
他们会花时间进行职业规划。
(4)We think he needs to spend time on his homework.
我们认为他需要在作业上多花些工夫（时间）。
(5)Make it a point to rest and spend time on things that matter in life, not just work.
别只忙于工作，也要会休息，花时间做点真正有意义的事情。