safety buoys
plural of breadline
(algebra) A function from one ring to another one which preserves the structure of the additive operation, the structure of the multiplicative operation, the zero element (additive identity), and, ...
plural of safety buoy
plural of foulard
沿岸警備隊は嵐が来る前に岩の多い入江の周囲に救命ブイを係留した。
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DiQt
Free
★★★★★★★★★★
