Porasil
多孔硅胶珠
🗣️ 情景例句
It's completely beyond my grasp.
我完全摸不着头脑。
She's not at her desk right now.
这会儿她不在办公室办公。
In primitive cultures the obligation to seek and to receive the traditional instruction is binding to all.
在原始文化中，寻求和接受传统教育的义务对全民都有约束力。