?? 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. 馬鞭草
??? 情景例句
If you flatter your mother a bit she might invite us all to dinner.
你如果多奉承你母親幾句話,說不定她會把我們全部請去吃飯。
Better wear out shoes than sheets.
寧可(經常運動)穿破鞋子,也不(因病長臥)磨破床單。
below 20 per cent, its bactericidal action is negligible.
濃度低于20%時,殺菌能力基本上就不存在了。