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必要, 必用, ひつよう
1. necessary, needed, essential, indispensable
2. necessity, need, requirement
必要的,必需的,必不可少的,不可缺少的;必要性,需要,要求
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いつでも, なんどきでも, 何時でも
1. always, all the time, at all times
2. (at) any time, whenever (you like)
tbd
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電話, でんわ
1. telephone call, phone call
2. telephone (device), phone
tbd