the same as a case sensitive search of the alternation of all possible case
Thu, 13 May 1999 00:00:00 +0000 UTC
，详情可参考有道翻译下载
"Think carefully before answering."
В рыболовной сети нашли 15-метровую тушу редкого кита20:45
alias ast_C70="ast_new;STATE=C70;ast_push"