本期节目的问题 Hi, I'm Amy Ying from Shanghai, China. I would like to ask the differences between the following four words as they confuse me a lot: Transmission, transformation, transaction, transportation ...

Prefixes are a group of letters that change the meaning of a word when they are added to the start. The prefix un- usually means 'not', so the new word means the opposite of the original. In this ...

Elements Not only numbers, text and operators can appear after a formula prefix. You can include the contents of other cells by entering the cell letter and number reference such as "=A1 + C3." ...