| 单词 | 电子带负电 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔charge〕An electron has a negative charge.电子带负电荷。英汉大词典〔negative〕Electrons are negative.电子带负电。外研社新世纪A proton has positive charge and an electron has negative charge.质子带正电荷，电子带负电荷。剑桥国际 |
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