An organic reaction is not only they look like on the textbook, in fact there are lots of things we have to know inside

Safety is the most important than other things , even though you lost your money

走 標準添加法

人真的挺有趣的
你不說明嚴重性沒有人會理你
你說的很嚴肅還是有人當放屁
媽的。

Ylvis - The Fox (What Does the Fox Say?) [Official m...what does the fox say

大一有微積分，大二上有化數，大二下有物化，微積分無所不在，從簡單的變數處理，到後面一堆阿哩阿紮亂七八糟的e阿 ln 阿混個三角函數讓你爽飛天= =