Ferroalloy
n. [化]鐵合金
??? 情景例句
Paper or plastic?
現(xiàn)金還是信用卡？
It's faster to go by plane than by boat.
和坐船比，坐飛機是更快的。
Most cats remain suspicious of humans all their lives.
在它們的一生中，大多數(shù)貓都對人存有戒心。