To spend all your time studying
把所有时间都花在学习上 (ba suoyou shijian dou hua zai xuexi shang)
"He buried himself in books before the finals."
"他在期末考试前埋头于书本中。" (ta zai qimo kaoshi qian maitou yu shuben zhong)
to make a sincere promise, often used by children
to remove tension or misunderstanding by talking openly
To keep something secret.
To believe in someone's honesty or ability
to be free from blame or responsibility for something
an unusually large harvest
