Polymer powder
[医] 聚合物粉
🧩 词语组成解析
powder
['paʊdɚ]
n. 粉，粉末;粉状物质;
vt. 在…搽粉;
vi. 涂粉，变成粉末;
🗣️ 情景例句
You've changed a lot since I last saw you.
自从我上次见到你以来，你改变了很多。
Necessity knows no law.
铤而走险。
Such an experience befell a certain young girl the first time she was traveling alone.
一个小姑娘第一次单独出门就碰到了这种情况。