Invalid cluster
无效簇\\n[计] 无效簇
🧩 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
cluster
['klʌstɚ]
n. 丛;簇，串;群;[语言]辅音群;
vi. 丛生;群聚;
vt. 使密集，使聚集;
🗣️ 情景例句
The bridge is about three hundred and eighty-five feet long.
桥长约三百八十五英尺。
I can't say for certain off-hand.
我还不能马上说定。
Oh, doctor. He seems terribly ill. Are you sure it's nothing serious?
噢，医生。他似乎病得很厉害。你肯定不是什么大病？