| a 英 [ə] 美 [ə] art. (用于可数名词或单数名词前，表示未曾提到的)一(人、事、物);用于前有形容词或后有短语的不可数名词前;任何一;每一 |
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A bear can run. A bear can climb. A bear can swim. A bear can eat. A bear can play. A bear can sleep. A bear can growl. |
