词汇	put up a sign
释义	put up a sign 贴出告示
随便看	collision of ships collision of speech collision of the first kind collision of the second kind collision of two bodies collision of variables collision of vectors collision on land collision on the bed collision orbit collision oregen Collision orogen collision orogeny collision parameter collision participating masses collision party collision physics collision plasma collision point collision point analysismethodology collision policy collision post collision prediction collision preventation collision preventer