Contrapositive
a. 對照的, 針對的\\n[計] 逆反式的, 倒置的
??? 情景例句
about my not wanting to go into medicine?
對我不學醫？
Misery acquaints men with strange bedfellows.
落難時不擇伙伴。
Why? One difficulty is to construct the agreements.
為什么呢？困難之一是起草這些協議。