Sand filtration
[醫] 沙濾
?? 詞語組成解析
sand
[s?nd]
n. 沙;沙灘;沙色;
vt. 撒沙于;用砂紙磨光;
n. 過濾\\n[化] 過濾
??? 情景例句
Well, perhaps,
好的， 也許，
Reckless youth makes rueful age.
虛度青春，悔恨無已。
You either starve to death or live like Robinson Crusoe, Waiting for a boat which never comes.
要么餓死，要么像魯濱孫那樣，天天盼船來，卻總沒見船影。