1.upbeat n. 兴旺;上升;弱拍 adj. 乐观的;上升的
The Defense Secretary gave an upbeat assessment of the war so far.
国防部长对迄今为止的战事进行了乐观的评价 。
2.humanities n. 人文学科(humanity的复数 )
The number of students majoring in the humanities has declined by about half.
主修人文学科的学生数量已经下降了近一半 。
3.gravitate vi. 受引力作用;被吸引
You naturally gravitate toward people with shared values.
你自然而然地被具有共同价值观的人吸引 。
4.correlation n. [数] 相关,关联;相互关系
Are you familiar with their correlation ?
你了解他们的相互关系吗?