Unless noted beforehand, professors rarely conduct a normal class on the first day.

除非事先通知，教授一般不会在第一天就正式授课。

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Millimeter is used as length unit in this drawing unless otherwise noted.

除非另有注明，本图采用毫米为长度单位。

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Homework is due at the next class meeting, unless otherwise noted.

下一次上课交家庭作业，除非另行通知。

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Homework is due at the next class meeting, unless otherwise noted.

下一次上课交家庭作业，除非另行通知。

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