A couple questions I have three questions that came up in my studies. 1) Are these both correct, and do they have different meanings? 我在美国出生里 我在美国出生 2) What is the word for graduate student? By this I mean a student who is pursuing a PhD for example. What is the word for postdoc? 3) What is the difference between 明白 and 懂? 我明白 我懂 I am just starting out, so I can only understand answers written in English.