Grammar Note
表示“一杯……”时，用 a cup of + 名词，如 a cup of tea。
杯子
cups — plural of cup
先理解核心含义，再看它在真实句子里的用法。
杯子
a small open container used for drinking, usually with a handle
She filled her cup with hot tea and sat down by the window.
她把杯子倒满热茶，然后坐到窗边。
通常指带柄的杯子；玻璃杯用 glass
一种凹形容器,用于饮水,通常由不透明材料制成(与玻璃杯相对),并带有手柄。
A concave vessel for drinking, usually made of opaque material (as opposed to a glass) and with a handle.
通常用于饮水的小型敞口容器；通常有把手
a small open container usually used for drinking; usually has a handle
上述容器的内容物。
The contents of said vessel.
杯子能容纳的量
the quantity a cup will hold
Please put the dirty cups in the sink after breakfast.
早餐后请把脏杯子放进水槽里。
AI contextual example
This cup has a small crack near the handle, so be careful.
这个杯子靠近手柄的地方有一条小裂缝，所以要小心。
AI contextual example
he put the cup back in the saucer
他把杯子放回茶碟上
WordNet
the handle of the cup was missing
杯子的把手不见了
WordNet
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表示“一杯……”时，用 a cup of + 名词，如 a cup of tea。
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Collins 词频等级为 5，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.