concerted effort齐心协力;
make effort作出努力;
best effort尽力而为,尽最大努力;尽力服务;
relief effort救灾工作;
research effort研究工作;研究计划;
without effort毫不费力;
team effort团队合作,团队努力的结果;
development effort研制计划,发展工作;
design effort设计工作;
marketing effort营销效能;市场效能;
put effort into something对某事付出极大的力气;
after one's effort经过努力后;
by one's efforts靠努力;
with effort费力地;
without effort毫不费力地