Mainboom
n. 系主帆的帆角的圆木
🗣️ 情景例句
He said they need a new book of photographs,
他说他公司需要一本新的摄影集，
Let your yea be yea and your nay be nay.
是就是，非就非。
This product is doing very well in foreign countries.
这种产品在国外很畅销。