It's used for cutting.
用于切割。
初三英語課文
Unit 16 What's it made of
?? 句中詞匯解析
從本句中提取的重要詞匯
adj. 用過的;習慣于;二手的;舊的;
v. 使用（ use的過去式和過去分詞）;常常，經常;
"Things ain't what they used to be."
現在情況不比從前了。
近義：outworn, worn, utilized, wonted, accustomed
反義：unused, unworn
cutting
[['k?ti?]]
n. 切斷, 切下, 路塹\\n[化] 切屑
近義：snippet, clipping, snip, trimming, clip, trim
反義：innocuous, offenceless, safe, unoffending, benign, harmless