Packing fractians
[医] 敛集率
🧩 词语组成解析
packing
['pækiŋ]
n. 包装，打包;包装材料;（缝隙）填料;
v. 压紧(pack的ing形式);装满;
🗣️ 情景例句
I don't know what-to do.
我不知道怎么做。
He that boasts of his own knowledge proclaims ignorance.
夸耀知识实乃无知。
At this, the police pointed out ironically that this would hardly be necessary as the men were already under arrest.
警察听后讥讽地说，这大可不必，因为他俩已被逮捕了。