P. g.
[医] 德国药典
🧩 词语组成解析
[医] 克, 龈的, 分生孢子的; 牛顿氏引力常数
🗣️ 情景例句
When you see a new word, look it up.
当你看到一个新的字时就去查阅它。
Never swap (or swop) horses while crossing the stream.
骑渡中流莫换马。（指危难时不宜做大变动）
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。