Word: 一盏 (yìzhǎn)

一盏旧灯悬在天花板下面。

Yìzhǎn jiù dēng xuán zài tiānhuābǎn xiàmiàn.

An old lamp hangs from the ceiling.

天花板上悬着一盏大灯。

Tiānhuābǎn shàng xuánzhe yìzhǎn dàdēng.

A big lamp hangs from the ceiling.

风口上的一盏灯,说灭就灭

fēngkǒu shàng de yìzhǎn dēng,shuō miè jiù miè

a lamp in a draughty gap: it goes out as soon as you say so