Backing sand
[機] 背砂
?? 詞語組成解析
backing
[['b?ki?]]
n. 后退, 襯背, 后援, 支持者\\n[化] 襯墊
sand
[s?nd]
n. 沙;沙灘;沙色;
vt. 撒沙于;用砂紙磨光;
??? 情景例句
Five years of happiness. Happy anniversary.
為了五年的幸福。祝你結婚五年快樂！
The problem has been bothering me for weeks.
那個問題已經困擾了我幾個星期。
Who was it?
誰打來的電話？