Janeckeite
硅酸三钙石
🗣️ 情景例句
that he wants to develop it into a magazine concept.
他想要将它加以发展 使之成为一个杂志方面的构想。
Open your book,please.
请把书打开。
It took a very long time to carve a page for a book.
刻一页书要花费的时间太长。