River sand
[机] 河砂
🧩 词语组成解析
river
['rivə]
n. 河，江;溪，巨流;
sand
[sænd]
n. 沙;沙滩;沙色;
vt. 撒沙于;用砂纸磨光;
🗣️ 情景例句
In face, Australia is the only country that is also a continent.
事实上，澳大利亚是唯一作为洲的国家。
Would Dr.Block be able to see me at 9:30 tomorrow?
明天9点半布洛克医生能给我看病吗？
Sometimes the secrecy goes to such an extent that the whole nature of the research cannot be mentioned.
有时，保密竟达到了这样的程度，即连研究工作的整个性质都不准提及。