service

服务, 贡献, 雇佣, 公职, 服役, 功劳, 仪式, 送达, 行政部门

work done by one person or group that benefits another; an act of help or assistance; the act of public worship following prescribed rules; a company or agency that performs a public service; subject to government regulation

保养, 维修

武装部队的, 服务性的, 仆人的, 耐用的

发球

发球动作