Silcrete
硅结砾岩; 硅质壳层
🗣️ 情景例句
That idea would never work in practice.
那种设想永远实现不了。
How long will it take you to have it fixed?
你要多少天才能把它修理好？
I was only five when my father had taken me abroad, and that we eighteen years ago.
我5岁那年，父亲就带我出了国，那是18年前的事了。