a. lacking kindness
a. 不仁慈的, 不亲切的
1. She was unkind to her classmates during the group project.
她在小组项目中对同学们不友好。
2. It's unkind to make fun of someone for their mistakes.
嘲笑某人的错误是不友好的。
3. He realized that being unkind would only make things worse.
他意识到不友好只会让事情变得更糟。