Sent_en: 2zh The Australian based pharmaceutical company CSL has announced that despite promising human trials of their bird flu vaccine, more research is needed before the final formula can be developed.
Sent_yy: 总部设在澳大利亚的制药公司CSL宣布，尽管他们的禽流感疫苗有望用于人体试验，但是在最终的配方研制出来之前还需要进行更多的研究。