Polyphenyl
聚苯
🗣️ 情景例句
with one real intergenerational program.
用一套真正跨辈份的活动。
Those goods are available in strong wooden drums of 1,2,5,10 and 20 litres.
这些货物分别装入1、2、5、10、20升的木桶里。
local epidemics of this disease could be created.
就可以使这种疾病在一个地区蔓延起来。