P.-p. factors
[医] 抗糙皮病因子, 抗蜀黍红斑因子, 烟酸
🧩 词语组成解析
n. 因素（factor的复数）
🗣️ 情景例句
My friends will get a big kick out of getting these.
送劳力士，我同事准乐死了！
He who does not advance falls backward.
不进则退。
This is not easy, and may require two porpoises working together.
这并非易事，可能需要两只海豚合伙干才行。