1.belonged to 屬于
例句:He deduced that the two children belonged to the couple.
他推斷這倆小孩是這對夫婦的。
2.On balance 總的來說
例句:On balance, the book is a friendly, down-to-earth introduction to physics.
總而言之,這是一本通俗而務實的物理入門書。
3.In fact 事實上
例句:In fact, those people have been promoted.
事實上,那些人已經升職了。
4.the opposite sex 異性
例句:We find members of the opposite sex more attractive when under the influence.
我們喝醉時感到異性更具吸引力。