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methyl group
例句
DEFINITIVE EXAMPLES 权威例句
〔dimethyl〕
An organic compound, especially ethane, containing two
methyl groups
.双甲基的,乙烷:一种有机化合物,特别是乙烷,内含有两个甲基
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pack in
pack into
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pack off
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pack rat
pack together
pack up
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package goods
package holiday
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更新时间:2025/6/6 20:01:10