Cesium
n. 铯\\n[化] 铯Cs
✅ 同义词
🗣️ 情景例句
A serious matter.
一个严重的问题。
To chase butterflies
追逐蝴蝶
Below, the captain realized to his horror that the Titanic was sinking rapidly,
在下面，船长惊恐的地发现“泰坦尼克”号正在急速下沉，