Physical foaming agent
[化] 物理发泡剂
🧩 词语组成解析
[计] 泡沫的\\n[化] 发泡; 泡沫层
🗣️ 情景例句
Yes. About four years ago.
是的 ，大约四年前走的。
Rear sons for help in old age; and store up grains against famine.
养儿防老。
It was noticed that there were no signs or warnings on the supply lines that ran round the port.
人们这才注意到，铺设在码头周围的供应管道上没有贴标签或告示。