And no, you don't need to be already fluent and know everything to teach someone else you can literally be a beginner and teach someone something, you know, or something at your level and
不,你不需要已經很流利了,什麼都懂了,才能教別人,你可以從字面上理解,作為一個初學者,教別人一些東西,你知道的,或者教一些和你水準相當的東西。