A strong sense of responsibility, careful, serious-minded, pays attention to materials saving.
责任心强，工作细心，认真负责，注重材料的节约。
2
The 51-year old Mr. Haraguchi also believes he can tell jokes at meetings and still have a serious-minded staff.
不仅如此，现年51岁的Haraguchi还相信在会议上开点玩笑并不会影响会议的严肃性。
3
Students must be serious-minded and can't do other activities irrelevant for the teaching contents in class. Students should complete all the homework on time.