我有两片嘴唇。
两片小嘴唇里面是牙齿。
他那两片红红的嘴唇好不容易才在嘴角分开。
He had very red lips, and they parted at the corners with difficulty.
他的嘴动得非常快，两片完美的嘴唇之间仅仅露着一条缝。
His mouth was moving very quickly, his perfect lips barely opening.
他的嘴动得非常快，两片完美的嘴唇之间仅仅露着一条缝。
His mouth was moving very quickly, his perfect lips barely opening.
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