Barbatic acid
[化] 巴尔巴酸; 巴尔巴地衣酸
🧩 词语组成解析
🗣️ 情景例句
You don't sound very enthusiastic.
你似乎不太热衷。
This week he took his first vacation from work in five years.
五年来，他本周破例第一次休假。
In 1929, three years after his flight over the North Pole, the American explorer, R.E.Byrd, successfully flew over the South Pole for the first time.
美国探险家 R。伯德在飞越北极3年之后，于1929年第一次飞越了南极。