这位讲师细心准备课程。
The instructor prepared THD class lesson carefully.
youdao
在我下楼前，我就细心准备好我必须说什么。
Before I came downstairs I had prepared myself very carefully for what I must say.
最重要的就是要细心的准备好合同文件。
And most important is to prepare very carefully your contract documents.
汤姆准备功课不细心。
Tom is careless in preparing his lesson.
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