Picolinium
[化] 甲基吡啶┹; 皮考啉┹
🗣️ 情景例句
There are three things that have to be done first, Harry.
首先我们必须做三件事， Harry。
He has a pound of beef.
他有一磅牛肉。
It's about four hundred yards down this street.
城堡就在这条街上，（离这儿）400码左右。