Their friend Professor Calculus is held on the ship by kidnappers.
他们的朋友卡尔·库鲁斯教授被船上绑匪劫持。
"I had never taken a course in physics, or calculus, or differential equations," he wrote to Professor Lewin.
“我从来没上过一节物理或者微积分课程”他告诉Lewin教授。
"I had never taken a course in physics, or calculus, or differential equations," he wrote to Professor Lewin.
“我从来没上过一节物理或者微积分课程”他告诉Lewin教授。
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