码尺是量长短的, 英尺也是量长短的.A yardstick is measure, so is a foot rule.我想买把码尺.I want to buy a yardstick.在日常实用中, 标准物也许是码尺或米尺.For everyday purpose, that standard object could be a yardstick or meter stick....
She was forced to live in a cockroach - infested house.她被迫住在一间蟑螂成群的房子里.A species of cockroach sprays a substance , ethylacrolein, that is a kind of tear gas.某种蟑螂喷射一种催泪性毒气――乙 基丙烯 醛.You must be tough as a cockroach to surv...