Alkide
烃基化物, 烷化物
🗣️ 情景例句
The first word is snow.
第一个字是"snow。
Does it take long to get into Taibei from here?
从此地去台北要很久吗？
In 1953, a former electronics engineer in his fifties, Christopher Cockerell,who had turned to boat-building on the Norfolk Broads,
在1953年，有一位50多岁名叫克里斯托弗·科克雷尔的原电子工程师，改行在诺福克郡的湖泊地区从事造船业，