Saltpeter
n. 硝石, 硝酸钾, 硝酸钠\\n[化] 硝石
✅ 同义词
🗣️ 情景例句
You should take the number 1 subway.
应当搭一路地铁。
Various rumors about him are going around.
到底流传着关于他的种种流言蜚语。
This morning, however, a firemen accidentally discovered the cause.
然而今天上午，一个消防队员偶然发现了起火的原因。