octagon / ??kt?ɡ?n / n. 八角形

=＋

Can you teach me to draw an octagon?

你可以教我畫出八角形嗎？

octopus / ??kt?p?s/ n. 章魚

=＋

I like eating octopus very much.

我很喜歡吃章魚。

octuplets n. 八胞胎

=＋

She has just given birth to octuplets.

她剛剛生了八胞胎。