Heptagons
n. 七角形；[數] 七邊形
??? 情景例句
I'm sure they'll find the owner.
我相信他們會找到狗的主人。
Mr. Smith is still in his fifties.
史密斯先生仍然50幾歲。
Then they brushed ink onto the characters.
接著，把墨汁刷在字上。