Nigrities linguae
[醫] 黑舌[病]
?? 詞語組成解析
[醫] 發黑, 黑變
n. 舌( lingua的名詞復數 ); [醫]（單lingua）舌
??? 情景例句
I don't think I have a mathemationcal brain.
我想我沒有數學頭腦。
The mountain has brought forth a mouse.
虎頭蛇尾。
This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
這種通訊聯系要靠21厘米波段，即每秒1420兆周的精確無線電頻率。