tap off
动词 v.
英文释义
动词 v.
- To remove liquid or other particles from a furnace, keg, or other canister.
- To turn off by striking lightly.
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To conclude an electronic ticketing process at the end of a public transport journey by holding a chipcard or a mobile device close to a terminal or reader
— Launching Monday, the new multi-rider feature will allow up to five riders to use the same Key card when taking a SEPTA bus, trolley, the Broad Street Line, the Market-Frankford Line, the Norristown High Speed Line and Regional Rail.(…) Riders will need to tap on and tap off to get the correct fare.
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数据来源: Wiktionary