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to hold out; to extend (e.g. a hand)
to present; to submit; to tender
to sacrifice; to give (up)
to send; to forward
彼女は名刺を差し出して自己紹介した。
She held out her business card and introduced herself.
困っている人に手を差し出すべきだ。
You should extend a helping hand to those in need.
受付で申請書類を差し出して担当者の署名を求めた。
I handed over the documents and asked for a signature.