求翻译：教师一句可能自以为无意性的“评语”，往往会左右此后学生的听课情绪，一个眼神，一句赞扬，一个微笑，不花时间，不费力气，却能收到明显的教育效果。是什么意思？

A teacher might think unintentionally sexual " comment" , after which the students often lectures about the mood , a look, a praise, a smile , do not spend the time , effortless , but it can receive significant educational effect .

A teacher may be the thought that it has no intention of the "Comments" that are often left and right after that students' emotional, one eye, a word of appreciation, a smile, and does not take the time and effort, but it can receive significant effect of education.

Teacher possibly from thought has no intention “the evaluation”, often can control hereafter the student to attend a lecture the mood, a look, a praise, a smile, not the colored time, does not take the effort, can receive the obvious education effect actually.

Teachers ' phrase may think they have no intention of "comment" tends to be around students ' listening to the emotion, a look, a word of praise, a smile, and don't take the time, effortless, but received significant education effect.

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