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課, か
1. lesson
2. section (in an organization), division, department
3. counter for lessons and chapters (of a book)
tbd
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始める, 創める, はじめる
1. to start, to begin, to commence, to initiate, to originate
2. to start up (a business, society, etc.), to open (e.g. a store), to establish
3. to start ..., to begin to ...
开始;开始……,着手……;创办(企业、社团等),开业(如商店),建立
から
1. from (e.g. time, place, numerical quantity), since
2. from (originator), by
3. because, since
4. out of (constituent, part)
5. through (e.g. window, vestibule)
6. after, since
7. expresses sympathy or warning
从,自……;因为;被,用于……