Someone calmly takes up a pair of clamshells in her hand, and if they match perfectly in one hand, she separates the pair and put them inside down in front of her knees.
そしておもむろに1対のハマグリ殻を掌中に取り上げ、片手で合わせ、よくあったならば、2つにわけて膝の前に伏せる。