Some toothbrush shapes will suit some mouths better than others. Make sure that your toothbrush bristles comfortably reach your backmost molars, as some brushes may be too large or wide.
某些牙刷刷头的形状会比其他形状的更适合你的口腔，要确保你牙刷的刷毛能够触抵你臼齿的最后端，既不能太大也不能太宽。
People make noises because they eat without closing their mouths.
因为人们吃东西时没有闭上嘴，故而发出噪声。
Don't make noises with your mouth. People make mouth noises because they eat without closing their mouths.
吃饭嘴别出声，嘴出声是因为吃饭没有闭着嘴嚼。
With our mouths we can make life good or render it nearly intolerable.
我们的口能够美化生活，也能够让生活变得难以忍受。
With our mouths we can make life good or render it nearly intolerable.
我们的口能够美化生活，也能够让生活变得难以忍受。
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