Nanoparticles
纳米粒
🗣️ 情景例句
Good. What do you think, Richard?
好。 你看呢 Richard？
To paint the roof
油漆屋顶
probably vertical, cliffs, and gentle sediment-covered terraces,
乃至垂直的峭壁和沉积物覆盖的缓和的阶梯地带，