Billon
n. 比朗金(或银)合金
🗣️ 情景例句
That'll cheer you up.
这样会让你舒畅些。
The firemen fight fires and rescue people.
消防队员和火灾搏斗，拯救人们。
Then it turned in a semicircle, ran straight again, and turned in another semicircle to the opposite side.
然后转一个半圈，再沿直线飞，再朝反方向转个半圈。