Operatorless
a. (电话)自动的；无接线员的
🗣️ 情景例句
Aren't you surprised
不觉得很惊讶吗？
Downy lips make thoughtless slips.
嘴上没毛，办事不牢。
It was the idea of supporting a craft on a 'pad',or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
用一个气垫来支撑船体，低压空或软垫，软垫周围用高压空气环绕。