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授業， じゅぎょう

1. lesson, class, teaching, instruction, classwork, schoolwork

课、课程、教学、指导、功课、学业

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単位， たんい

1. unit, denomination 2. credit (in school) 3. in units of (e.g. "in thousands"), in amounts of

(计量、计数等)单位；学分（在学校）；以单位计(例如"以千计")

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は

1. indicates sentence topic 2. indicates contrast with another option (stated or unstated) 3. adds emphasis

指示句子的主题

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です

1. be, is

断定助动词，是，是也

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