[ 复数 smiles 第三人称单数 smiles 现在分词 smiling 过去式 smiled 过去分词 smiled ]
Therefore, in order to have a good orthodontic treatment result, we should recognize the esthetic characteristics of smile first.
为此,必须首先对微笑的美学特征有明确和客观地认识。
参考来源 - 微笑正面像正畸美学特征计算机测评系统的研发及临床应用研究Therefore,research on smile cutting propagation technology is of great significance.
因此,开展含笑扦插繁殖技术研究具有十分重要的意义。
参考来源 - 含笑扦插繁殖及生根生理的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
V-I When you smile, the corners of your mouth curve up and you sometimes show your teeth. People smile when they are pleased or amused, or when they are being friendly. 微笑
When he saw me, he smiled and waved.
他见到我时，他笑了笑，挥了挥手。
He rubbed the back of his neck and smiled ruefully at me.
他揉搓着后脖颈，冲我懊悔地笑了一下。
N-COUNT A smile is the expression that you have on your face when you smile. 微笑
She gave a wry smile.
她露出苦笑。
"There are some sandwiches if you're hungry," she said with a smile.
“如果你饿了，那儿有些三明治，”她微笑着说。
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