单词	pertinacious
释义	pertinaciousper‧ti‧na‧cious /ˌpɜːtəˈneɪʃəs◂ $ ˌpɜːr-/ adjective formal Word Origin WORD ORIGINpertinacious Origin: 1600-1700 Latin pertinax, from tenax; ➔ TENACIOUS Examples EXAMPLES FROM THE CORPUS But pupils of the more pertinacious sort profited greatly from his teaching and his company. continuing to believe something or to do something in a very determined way SYN  tenacious—pertinaciously adverb—pertinacity /-ˈnæsəti/ noun [uncountable]
随便看	stamped addressed envelope stampede stamping ground stance stanch stanchion stand standalone standard standard-bearer standard deviation Standard Grade Standard grade standard-issue standardization standardize standard lamp standard of living Standard Oil Standard, The standard time standby standby time stand-in standing

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