Fastness
01
速度, 速さ
a rate (usually rapid) at which something happens
02
要塞, 城塞
a strongly fortified defensive structure
文法情報
有生性の状態
無生物
形態的構成
複合語
可算
singular
not gender specific
複数形
fastnesses
03
固定性, 堅牢さ
the quality of being fixed in place as by some firm attachment
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fastness
fast
