dissemble|dissembled|dissembling

她试图掩饰自己的愤怒，但紧握的拳头出卖了她。

She tried to ___dissemble her anger, but her clenched fists gave her away.

她通过微笑来掩饰自己的不安。

She ___dissembled her unease with a smile.

他善于掩饰，从不在会议上表露真实想法。

He is good at ___dissembling, never revealing his true thoughts during meetings.