a: i’m taking part in a march against racism.

b: great, i hope that it helps the various different nationalities in the country.

racism

n.1.种族歧视，种族偏见; 2.种族主义

a: would you like to have a game of tennis?

b: i’d love to, but i don’t have a racket.

racket

n.1.喧嚷，吵闹; 2.敲诈，勒索，诈骗; 3.（网球等的）球拍

a: you look radiant tonight.

b: thanks for the compliment.

radiant

a.1.容光焕发的，喜形于色的; 2.光芒四射的，光辉灿烂的; 3.辐射的

a: wow, the weather was hot today.

b: yes, the sun radiated great heat.