Alstonia
夹竹桃属; 鸡骨常山属
🗣️ 情景例句
Her enthusiasm died away.
她的热情逐渐消失了。
I hope you get here on time.
我希望你准时到这里。
We should learn the value of money and learn how many hours' work has to be done before we can buy something.
我们应该认识到钱的价值，知道要干多少小时的活，我们才能买某件物品。