Pentaborate
五硼酸盐
🗣️ 情景例句
I'm going to Ft. Lauderdale during spring break.
在春假时，我打算去'Lauderdale'城堡。
Is he coming to dinner?
他回来吃饭吗？
His engine failed and he landed on the sea for the second time.
这次他又遭厄运，因引擎故障第二次降落在海面上。