Valvelet
小阀[瓣]
🗣️ 情景例句
That would be very helpful.
你这样做帮忙可大噢。
Thank you for inviting me.
谢谢你邀请我。
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。