Mathematics
SMA

The smile may no longer be an effective way to mask one's true feelings. Some psychologists have claimed that true smiles and false smiles use different muscles. For example, in the true smile, the muscles surrounding the eyes tighten, while the cheek muscles pull the corners of the lips upward.

優しいかたsvoc の文型を入れて欲しいです

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英語のコーナーで質問するとよいですよ。

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