Invalid digit
[计] 无效数位
🧩 词语组成解析
invalid
[ɪn'vælɪd]
adj. 无效的;不能成立的;有病的;病人用的;
vt. 使伤残;使退役;失去健康;
n. 病人，病号;残废者;伤病军人;
vi. 变得病弱;因病而奉命退役;
in不+val强壮+id...的→虚弱的；病人
digit
['didʒit]
n. 数字;手指，足趾;一指宽;
🗣️ 情景例句
when I was about eighteen years old.
那时我差不多十八岁。
Let me give you a little fatherly advice.
让我给你有点如父亲般的忠告。
I can't understand why he is being so selfish. He isn't usually like that.
我不明白他此刻怎么这么自私。他平时不这样。