双语例句原声例句
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维多利亚时代流传着一则箴言：“造物主赋予人类嘴唇以遮掩牙齿”。这暗示了在严格意义上的牙科学诞生之前，口腔的卫生状况往往非常糟糕。
"Nature gave us lips to conceal our teeth," ran one popular Victorian maxim, alluding to the fact that before the birth of proper dentistry, mouths were often in a shocking state of hygiene.
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果汁中的柠檬酸会调节口腔的PH值，杀死造成口气的细菌。
The citric acid in the juice alters the pH level in your mouth, killing the bacteria that cause bad breath.
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古希腊和罗马的文学详述了牙签的使用，它被用来保持口腔的清洁。
Ancient Greek and Roman literature discusses the use of toothpicks, which were used to keep the mouth clean.
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They're trying to achieve satisfaction through their mouth of a sort they didn't get in this very early stage of development.
他们想通过这种口腔运动,来获得本该在口腔期获得的满足感。
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According to Freud, the-- it's not a fixation in the stage, in the same sense as an oral or anal stage, but yes.
根据弗洛伊德的理论-,这并不是发生在某个阶段的固着，像是发生在口腔期和肛门期阶段那样，不过，你是对的。
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A phrase even more popular is the anal stage and that happens after the oral stage.
更为人所熟知的一个阶段则是肛门期,它出现在口腔期之后。
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