C-5-fraction
[化] 碳五馏分
🧩 词语组成解析
🗣️ 情景例句
Never mind.
无所谓。
We pitied the family in their sudden unhappiness.
那家人遭受突然的不幸，我们深感同情。
The speedboat had struck a buoy, but it continued to move very quickly across the water.
快艇撞上了一个浮标，但它仍在水面上快速行驶着。