He poled the raft down the river.他用篙撑筏沿江而下.He has surrounded himself with a raft of advisers who are very radical...他周围聚集了一大群偏激的顾问。'Are you sure the raft is safe?' she asked anxiously. 'Couldn't be sa...
他在接受经验性的无环鸟苷治疗后, 多次血培养和脑脊液培养是阴性.He was treated empirically with acyclovir, and multiple blood and CSF cultures were negative.环二鸟苷酸系统是细菌纤维素生物合成中重要的调控体系.The Cyclic Diguanylic Acid Regulatory System is the important regulat...