Soluble nitrocellulose
[机] 火棉胶
🧩 词语组成解析
n. 硝化纤维\\n[化] 硝酸纤维素
🗣️ 情景例句
Betty, you had it, but you didn't say it.
Betty你知道答案， 但是你没有说出来。
Politeness is to do and say the kindest thing in the kindest way.
文雅就是善良地做事，和善地说话。
she tripped on the carpet and the pudding went flying through the air, narrowly missed my aunt, and crashed on the dining table with considerable force.
走进屋来时，在地毯上绊了一跤。 布丁飞到半空，从姑母身边擦过，然后狠狠地砸在餐桌上。