N-PLURAL
三十多，三十几(指 30 至 39 之间的数字)
When you talk about the thirties, you are referring to numbers between 30 and 39. For example, if you are in your thirties, you are aged between 30 and 39. If the temperature is in the thirties, the temperature is between 30 and 39 degrees.
例句
Mozart clearly enjoyed good health throughout his twenties and early thirties.
显然，莫扎特在二十几岁到三十刚出头时，身体非常好。