calculates the mean value of numbers in A1:A50, excluding the 5 percent of the values representing the highest values and the 5 percent of the values representing the lowest ones. The percentage numbers refer to the amount of the untrimmed mean value, not to the number of summands.
计算 A1:A50 中数字的平均值，且不考虑代表最高值的占 5% 的值和代表最低值的占 5% 的值。百分比是指未调和平均值的数量，而非被加数的数量。