the preparations before class
the preparations before class
课前准备
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Pre-class , the students participate in the training on time went to a classroom to make preparations before class.
课前，参加培训的同学准时来到教室，做好上课前的准备。
youdao
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Here are my Suggestions: First, make all preparations before class, noted difficulties in the new lesson.
这里是我的建议：第一，在课前做好一切准备，在新课中记下难点。
youdao
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