1. in case conj. 萬一；假使

In case studies there are no right answers but there are many wrong ones.
在案例研究中，不存在正確的答案，但有許多錯誤的答案。

2. against

1. 相反；反對；違反；違背；逆：

against one's will 違心地，違背意愿地

to fight against evil 同邪惡做斗爭

2. 撞擊；撞著，碰著，頂著，觸及，與……相撞，同……沖突：

to push against the door 用力推門

3. 跟……接觸

to throw the ball against the wall 用球擊墻

4. 逆行，逆……方向，對著；跟……反方向

to drive against the traffic（汽車）逆行

against the current 逆流

5. 與……（形成）對照，與……襯托；以……為背景

green against the gold 金黃色打底的綠色

6. 與……對比，表示對比關系

He was elected by a majority of 30 votes against 15. 他以30票對15票的多數當選。

7. 緊貼著，緊靠著；毗連；倚靠，憑

the house against the church 教堂隔壁的房子