double
/ˈdʌbl/
adj. / v.
一句话记住
双的；两倍的；双人的；（使）加倍；（使）翻一番
释义与例句
adj.
双的；两倍的；双人的
consisting of two parts, or twice the usual size, amount, or number
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The museum has impressive double doors at its main entrance.
博物馆主入口处有气派的双开门。
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They booked a double room overlooking the sea.
他们订了一间能看到海景的双人房。
展开其余 1 条例句
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The word 'bank' has a double meaning in this context.
“bank”一词在这个语境中有双重含义。
v.
（使）加倍；（使）翻一番
to become twice as much or to make something twice as much
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The number of visitors has doubled in five years.
游客数量在五年内翻了一番。
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They hope to double production without increasing waste.
他们希望在不增加浪费的情况下使产量翻倍。
展开其余 1 条例句
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Fold the dough over and double its thickness.
把面团折过来，使厚度加倍。
词源与构词
记忆钩子
double 可作形容词或动词；表示“是原来的两倍”常用 double the amount，表示“某物的两倍大”常用 twice as big as，不要混用句式。
词族与关联词
词族（同一词根派生出的不同词性或形式）
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doubly 加倍地；双重地doubly 是副词，常用于 doubly important/difficult，表示程度加倍或有两方面原因。
反义词
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single 单个的；单人的double 可指由两部分组成、两倍数量或供两人使用；single 强调只有一个或供一人使用。酒店中 double room 通常指一张双人床的房间，不必然有两张床。She asked for a single room with a private bathroom. 她要了一间带独立浴室的单人房。
常见搭配
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double-check 复核；再次检查Double-check the figures before submitting the report. 提交报告前再核对一遍数字。
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a double room 双人房A double room costs slightly more during the holiday season. 旺季期间，双人房的价格略高。
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double in size 尺寸翻倍The town has almost doubled in size since the railway opened. 自铁路开通以来，这座城镇的规模几乎扩大了一倍。