分析下句型individuals who average less than six hours of sleep ha

分析下句型individuals who average less than six hours of sleep ha People who sleep ___ six hours a day.是填fewer than还是less than I never sleep for less than nine hours.中文是什么? for后跟一段时间的时候可否省略?可以说 They sleep less than nine hours吗 most students sleep _ than 9 hours every night .这里为什么填less 而 Americans sleep less than is good for them这句话怎么分析 less than two hours 还是fewer than two hours being of less than average height 请问being of在这里是啥意思或者什么词性? sleep less than is good for them six less than three times the square of y 的数学表达方式 英语翻译Cancellation of the audit less than 48 hours from schedu 对括号部分提问Millie watches (less than two hours of) TV after supp