单词	delving into
释义	delving into 钻研
随便看	ratchet-and-pawls ratchet and tongs ratchet arrangement ratchet bar ratchet bit brace ratchet (bit) brace ratchet blocking system ratchet box ratchet brace ratchet brace bit ratchet broach ratchet casing ratchet casing bushing ratchet chain ratchet clutch ratchet coupling ratchet cover plate ratchet cyclometer ratchet demand ratchet dial feed ratchet disc ratchet down ratchet drill ratchet-drive ratchet drive 没做贼心不惊，没吃鱼嘴不腥没儿不使妇没儿难使媳妇没出嫁的闺女做鞋子，不管女婿脚大小没出豁没分寸没利不早起没利不起早没到年关，忙什么年菜没到西天，碰上如来佛了笃信笃厚笃学笃守笃定笃实笃志笃悠悠笃深笃爱