原级：proof
第三人称单数：proofs
proofed
第三人称复数：proofs
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现在分词：proofing
\u0039\u0031\u0031\u67E5\u8BE2\u00B7\u82F1\u8BED\u5355\u8BCD
adj
1. treated so as to become resistant
e.g. rust-proofed automobiles shrink-proofed fabrics