acrid,adamant,adept,advent,adversity

acrid 刺激的 刻薄的

The acrid smell filled the room,making it difficult to breathe.

There is an acrid tone to your remarks.

adamant 堅定無疑的

He is adamant that a global financial panic is about to occur.

adept 內行的 熟練的

She is adept at cooking

advent 到來 出現

The advent of genetic-engineering has spawned many powerful ,disease-fighting vaccines.

adversity 逆境 時運不濟

Adversities are not uncommon to those who play stock market.