90
ninety
🗣️ 情景例句
There must be a way
总该有个办法
The tour will take about an hour and a half. We ought to be back here by 3:00.
参观大概要一个半小时，3点钟以前回到这里。
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。