Octahydrate
八水氢氧化钡
🗣️ 情景例句
Hi, Son. Is everything all right?
嗨 ，孩子 一切都顺利吗？
They have been much too irresponsible for their high position.
他们虽身居要位，未免太缺乏责任感了。
When they objected, they were killed.
他们反抗时就被杀害。