effort on，例如：
1、She spends too much effort on things that don't matter.她在一些无关紧要的事情上花费精力太多。
2、The effort spent on careful grading， mixing and compaction of concrete will be largely wasted if the concrete is badly cured.如果混凝土养护得很差，那么在精心选定混凝土的级配、拌和和密实成型上所耗费的精力将是徒劳无益的。
3、We need to make a concerted effort to finish on time.我们需要通力合作才能按时完成。
1/effort释义：
n. 努力成就
2/例句：
After everyone's joint efforts， the company has developed very well.
经过大家的共同努力，公司发展得很好。
3/effort固定搭配短语有：
in an effort to企图（努力想）试图要
great effort巨大努力
make every effort尽一切努力
spare no effort不遗余力抽出宽容节省
joint effort共同努力
