Fourthly
adv. 第四(列举条目等时用)
✅ 同义词
🗣️ 情景例句
Who jammed the photocopier, again?
谁又把复印机卡住了？
Do you go on picnics?
你常去郊游吗？
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。