他无法掩饰脸上洋溢的欣喜笑容。

He couldn't hide the delighted grin that spread across his face.

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He couldn't hide the delighted grin that spread across his face.

grin 是动词/名词,指"咧嘴笑、露齿而笑",通常表示开心、得意或顽皮的笑容。与smile(微笑)相比,grin更强调嘴巴张开的幅度较大,能看到牙齿。

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