| 单词 | 有偿服务 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔help〕The system is based on mutual help rather than on payment for services.这一体制的基础是互助而非有偿服务。牛津搭配〔service〕They sold their services to a major airline.他们向一家大型航空公司提供有偿服务。牛津搭配 |
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