I think it's one thing to say there's 140,000 planes being monitored by the federal government at any one time, and it's another thing to see that system as it ebbs and flows.
باید بگویم اینها 140 هزار هواپیما هستند که توسط دولت فدرال در یک زمان رصد شده اند، و دیگر اینکه می بینید که شبیه جزر و مد دریاست.