deep-freeze
n.
registered trademark (U.S. Patent Office, 1941) of a type of refrigerator; used generically for "cold storage" since 1949.
词汇 | deep-freeze |
词根词缀 | Online Etymology Dictionary deep-freeze n. registered trademark (U.S. Patent Office, 1941) of a type of refrigerator; used generically for "cold storage" since 1949. |
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