as well, as well as 意思和用法

tobacco and e-cigarette 兩個是一組的,此時使用 as well as 才不會一堆 and 擠一起
一長串的 and 可以利用 as well as 來稍做分類
as well = too(注意 as well 為學術文章寫法
as well 有時會和 and 合作,意思比較像 also
might as well 不妨