A:What's the age range of your target client?
B:The average age range of our target client is 30 to 40.
我们客户一般的年龄范围都在30-40之间的.可以翻译成 our clients are usually ages 30 to 40.这种说法不妥.至少语法上看ages用法错误,应该改成aged.但是aded后面跟一个年龄范畴很不常见.所以我还是认为average age range:30 to 40.至多是30前面加上个from.即B:The average age range of our target client is from 30 to 40.