Phacolith
[地質]巖夾, 巖透鏡
??? 情景例句
I would like to send this by registered mail, please.
我想把這封信掛號寄出。
It takes two to make a quarrel.
要有兩個人才吵得起來。
The most wonderful piece of machinery on show was Nasmyth's steam hammer.
其中最奇妙的是內史密斯的蒸汽錘。