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to bind; to file
to finish (a dish) by pouring beaten egg into the broth
目をとじて音楽に集中してみた。
I closed my eyes and tried to focus on the music.
読み終わった本を静かにとじた。
I quietly closed the book I'd finished reading.
ドアがゆっくりとじるのを見ていた。
I watched the door close slowly.