Gram negative bacilli resistant to cephalosporins were between 17.4 % to 55.5 %.革兰阴性杆菌对三代头孢菌素的耐药在17.4%～55. 5%之间.Successfully developed Side - chains for cephalosporins has also resulted in good market reply.目前公司开发的系列头孢侧链...
他写了几首诗。锡德告诉他那几首诗都不押韵。He had written a few poems. Sid told him they didn't scan.波特遵循押韵的规则。Porter stayed within the rules of rhyme.歌词平淡老套，押韵生硬蹩脚。The lyrics are banal and the rhymes clumsy....