航空 → ☊ like: hàng không → →
aircraft cruiser ☊ 
tuần dương hàng không mẫu hạm ☊ to travel by air/land/sea ☊ by ☊
charge (sb) to do sth: The bank doesn't charge to stop a payment. ☊ charge ☊
developments in aviation technology ☊ development ☊
to fly economy (class) (= by the cheapest class of air travel) ☊ economy ☊
an air express company ☊ express ☊
a low-cost airline ☊ low ☊
If the item is not satisfactory, you will get your money back. ☊ money ☊
a national airline/museum/theatre ☊ national ☊
operate sth: The airline operates flights to 25 countries. ☊ operate ☊
an airline pilot ☊ pilot ☊
Bankruptcy is a real possibility if sales don't improve. ☊ possibility ☊
The airline has a good safety record. ☊ record ☊
regret sth: The airline regrets any inconvenience. ☊ regret ☊
The airline has an excellent safety record. ☊ safety ☊
She sent the letter by airmail. ☊ send ☊