单词	a casual friendship
释义	a casual friendship 一般的友谊
随便看	productivity issue productivity key productivity labor hours method productivity labour hour method productivity layout productivity level productivity liquid index productivity logger productivity loss productivity management productivity map productivity measurement Productivity Measurement and Evaluation System productivity metrics productivity model productivity model analysis productivity movement productivity of productivity of academic papers productivity of added value productivity of capital productivity of capital goods productivity of capital resources productivity of capital stock productivity of characters