名詞 time study:

1. an analysis of a specific job in an effort to find the most efficient method in terms of time and effort
   同義詞：time and motion study, time-and-motion study, time-motion study, motion study, work study

1. If you spend more time studying than cutting up, you'd get better grades.
   如果你能在學習上多花些工夫，而不是胡鬧，你的分數(shù)會大有提高的。
2. You could with profit spend some extra time studying the text.
   你多花點時間學習課文是有好處的。