2、dissemble v.掩饰，掩盖
We still possess a wider expection of probity in public life, even if scarcely anyone imagines there's no dissembling in politics.

3、proliferate vt.增殖，激增
CTLA-4's role is to calm lymphocytes down and stop them proliferating.

4、wreath n.花环 vt.环绕
I got a rush job on this wreath.

5、farce n.闹剧，荒唐的举动
How did you convince Surrillo to hear this farce?

6、soprano n.女高音 adj.女高音的
The soprano won fame in Soviet times when she performed in the Bolshoi Theatre.