nitre

来自拉丁语nitrum,碳酸钠。用于指硝石，硝酸钾。

nitre (n.)

c. 1400, "native sodium carbonate," from Old French nitre (13c.), from Latin nitrum, from Greek nitron, which is possibly of Eastern origin (compare Hebrew nether "carbonate of soda;" Egyptian ntr). Originally a word for native soda, but also associated from Middle Ages with saltpeter (potassium nitrate) for obscure reasons; this became the predominant sense by late 16c.

1. They used lumps of nitre, a sodium compound from the ship.

他们使用了船上的硝石块-钠的一种化合物.

2. To relieve the shortage of salt, people have begun to extract it from nitre.

他们为了解决食盐的缺乏, 进行了硝盐的制造.