Helicopters
n. 直升机( helicopter的复数形式 )
🗣️ 情景例句
I'm afraid not. We don't generally accept a letter of credit.
恐怕不行，我们一般不采用信用卡。
Are you married?
你结婚了吗
and we know something of the great variety of the sea bed's topography.
而且我们对海底地形的千变万化也有了一定的了解。