Meaning of liáng:
凉
the five Liang of the Sixteen Kingdoms, namely: Former Liang 前涼|前凉 (314-376), Later Liang 後涼|后凉 (386-403), Northern Liang 北涼|北凉 (398-439), Southern Liang 南涼|南凉[Nan2 Liang2] (397-414), Western Liang 西涼|西凉 (400-421)
Zài lìshǐ kè shàng, wǒmen tǎolùn le wǔ gè cháodài zhōng de Hòu Liáng.
在历史课上,我们讨论了五个朝代中的后【凉】。
In history class, we discussed the Later Liang of the five Liang dynasties.
cool; cold
Qiū tiān de zǎo chén, kōng qì hěn liángshuǎng.
秋天的早晨,空气很凉爽。
The air is very cool in the autumn morning.
Qiūtiān de yèwǎn hěn liáng.
秋天的夜晚很凉。
Autumn nights are very cold.
to let sth cool down
Wǒ bǎ tāng fàng zài chuāngtái shàng, ràng tā zìrán liáng.
我把汤放在窗台上,让它自然凉。
I put the soup on the windowsill to let it cool down naturally.