Pentahalide
五卤化物
🗣️ 情景例句
The advanced class starts at ten o'clock.
高级健身课十点钟开始。
He was so startled that he yelled.
他惊吓得高声喊叫。
The planes had been planting seed for nearly a month when it began to rain.
飞机撒播近一个月后，开始下起雨来。