Batteries are small devices that provide the power for electrical items such as radios and children's toys. 电池
noun [具体名词] 电池，蓄电池；一组，一系列；炮组，排炮；殴打罪；（棒球队的）投手和接球手
Before use, the battery must be charged. 电池使用前必须充电。
adjective [原级] 笼养的，层架式养殖的
He faced a battery of questions. 他被一连串的问题所困扰。
