His specialism is game theory, a branch of maths that studies how people negotiate with each other.
他的专长是博弈论，一个研究人们如何进行谈判的数学分支。
I came home after the football game, but had to study my maths for the Monday test.
玩完了足球后我即回家，但又要为星期一的数学测验而温习。
He closed the computer game and opened his maths homework.
他关上电子游戏，打开数学作业。
He closed the computer game and opened his maths homework.
他关上电子游戏，打开数学作业。
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