What I can't understand is why the illegal cooking oil，mostly made from discarded kitchen waste，is difficult to
detect
detect
（detection）and identify efficiently.

【答案】detect

【解答】

【点评】

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发布：2024/5/27 14:0:0组卷：1引用：1难度：0.7

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What I can't understand is why the illegal cooking oil，mostly made from discarded kitchen waste，is difficult to detectdetect（detection）and identify efficiently.