multiply
v.(使)增加,(使)繁殖;乘,(使)相乘
Children will learn to multiply in the second grade.
儿童在二年级学习乘法。
multitude
n.大量,许多[the~]大众,民众
I had never seen such a multitude of stars before.
我以前从未见过这么多的星星。
profit
n.利润,益处 vt.有益于,有利于 vi.得益
Our daily profit is usually around $500.我们每天的利润一般在 500 美元左右。
profitable
a.有利可图的,有益的
The advertising campaign proved very profitable.
事实证明,这次广告宣传活动很有效。