His comment on the team's performance was a real scorcher, leaving everyone in silence.

scorcher 是由动词 scorch（烧焦、烤焦）加上名词后缀 -er 构成的名词。scorch 本意是"灼烧"，引申为"严厉批评"。 scorcher 在这里是比喻用法，指"非常尖锐、犀利的批评"，就像灼热的火焰一样让人难以承受。