Group membership is of elementary importance to our wellbeing and because humans are very sensitive to signals of exclusion, a silence is generally taken as a sign of rejection.
群体归属感对我们的健康至关重要，由于人类对排斥的信号非常敏感，沉默通常被视为拒绝的信号。
2
The group had made some elementary mistakes.
小组犯了一些基本的错误。
3
When I was an elementary school student, I studied English in a group for a short time.