concussion Concussions also make a person feel very tired or angry.
脑震荡也会使人感觉疲倦或愤怒
cuss= shake 摇动 concussion n. 冲击；震荡
con 加强 + cuss 摇动 + ion 表名词 → 摇动得厉害 → 震荡
discuss v. 讨论
dis 分散 + cuss 摇动 → 分散敲击〔问题〕→ 讨论 percussion n. 震动
per 加强 + cuss 摇动 + ion 表名词 → 猛烈摇动 → 震动 They had a bass and a piano and a sax and percussion.
他们有一把低音吉他、一架钢琴、一管萨克斯和打击乐器。
repercussion n. 反响；回响
re 回 + percussion 震动 → 震动回来的余震 → 反响；回响
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