萨拉抬起手来开始用手指缠绕一缕头发。Sarah lifted her hand and started twirling a strand of hair.他用手指摸了摸伤口,想要确定受伤的程度。He explored the wound with his finger, trying to establish its extent.他手指哆嗦着从口袋里取出相机.With trembling fingers, he removed th...
Departments of public health must enhance control over prescribed ephedrine preparations.卫生部门要加强对麻黄素单方制剂的管理.OBJECTIVE : To establish an HPLC method for the assaying of ephedrine hydrochloride in Xiaoerhuatanzhike tablet....