in her early 30s 与 in her early 30‘s

问题描述:

in her early 30s 与 in her early 30‘s
用法区别

in one's 30s=in one's 30's, 就是指某人30多岁.
in her early 30s在她31-33岁时;
in her mid 30s在她34-36岁时;
in her late 30s在她37-39岁时;
in the early 30's /30s在三十年代初