Seym
abbr. secondary electron yield measurement 次级电子产率测量
🗣️ 情景例句
Dad, growing up means
爸爸， 长大了意味着
He is too lazy to move but luckily he has strong toes.
他虽然懒惰得不肯动，但是幸而有强壮的脚趾。
Oh! What a pity!
哎呀！真可惜！