生物医药大词典
英文: Mathematics, arithmetic,was the answer.
中文: “数学，算术，”他回答。英文: He is studying elementary arithmetic.
中文: 他正在学习基础算术。英文: She is slow at arithmetic.
中文: 她算术很迟钝。英文: Let us look at parallels between arithmetic using binary numbers and arithmetic using decimal numbers.
中文: 我们采用与十进制运算对比的办法来介绍二进制数的运算方法。英文: He is clever at arithmetic.
中文: 他擅长算术。