放低的声调
Lower your tone
以上为机器翻译结果，长、整句建议使用 人工翻译 。
为此他变成了我实际的老师，所以我不得不放低声调耐心地听他的“科学课”（表述）。
Therefore, he becomes my teacher to be exact. So, I have to lower down my voice and listen very carefully to his "class" (presentations and statements).
youdao
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