Ecco
abbr. 十八世纪经典古籍全文资料库（Eighteen Century Collections Online）
🗣️ 情景例句
Subway transportation is very advanced in Longdon.
伦敦地地铁非常先进。
I'm good at it.
我做这个很在行。
because balloons can be a great danger to aircraft.
因为气球有可能给飞机造成极大的危险。