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to be sufficient; to be enough
to be worth doing; to be worthy of; to deserve
to do (the job); to serve; to answer
三人分の材料があればこれだけで足りるだろう。
This much should be sufficient.
彼は誠実な性格で十分に信頼に足る人物だ。
He is a person fully worthy of trust.
この量で足りるだろうか。
Will this amount be enough?