much less 有两个意思 1. 更不必说, 何况 e.g That father can't discipline himself, much less set a good example for his children to follow. 2. 更少 e.g Cast-iron is a much less expensive material than steel. 表示 更少 的时候 much less 后跟 adj. 如本题 中 much less expert 表 更少的内行的