监护: to act as a guardian...
延长: to prolong, to extend, to delay...
实用: practical, functional, pragmatic, applied (science)...
卫生: health, hygiene, sanitation...
故乡: home, homeland, native place...
硕果: major achievement, great work, triumphant success...
退出: to withdraw, to abort, to quit, to log out (computing)...
奏效: to show results, effective...
种种: all kinds of...
百分比: percentage...
