Siloxene
硅氧烯
🗣️ 情景例句
Front... knees up, knees up.
前踢， 膝盖抬高。
A good marksman may miss.
智者千虑，必有一失。
What about the Natural History Museum? So far as I know, it's free.
去自然历史博物馆怎么样？据我所知，那儿是免费的。