A.p.f.
[医] 动物蛋白因素
🗣️ 情景例句
with my children and grandchildren.
与儿子、 孙子们在一起。
This is a diploma.
这是一张文凭。
it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.
提出把它作为星际间唯一可辨认的广播频率就为期不远了。