overhead 高考四级六级考研

The plane flew overhead, leaving a trail of white smoke.

飞机从头顶飞过，留下一道白色烟迹。

The little girl exclaims with joy as fireworks burst overhead.

小女孩在焰火绽放时欢呼雀跃。

A great congregation of birds flew overhead.

一大群鸟从头上飞过。

Vultures circled overhead as the lions fed.

狮子进食时候，禿鹫在上盘旋。

Half the number of bolts in floating head of deethanizer overhead cooler were brittle fractured.

气体分馏装置脱乙烷塔顶冷却器浮头螺栓，半数发生脆性断裂。

The people in the room overhead were very noisy yesterday evening.

昨晚在楼上那个房间人很吵。

Many stars overhead are invisible to the naked eye.

天上许多星星是肉眼。

The thick clouds passed overhead, but fortunately the rain kept off the whole day.

虽然乌云密布, 但很幸运地一整天都没下雨。

Crows cawed from the poplar trees overhead.

白杨树上乌鸦在上呱呱乱叫。

The sky was bright and cloudless overhead, and the tops of the trees shone rosily in the sun.

头上大晴朗无云，林梢在晨光下泛着一抹玫瑰红。

The seagulls circled overhead.

海鸥在上盘旋。

Two hawks were hovering overhead.

两只鹰在头顶盘旋。

Army helicopters hovered overhead.

军用直升机在中悬停。

The overhead bird flew away.

头上鸟飞走了。

Heavy overheads reduced his profits.

经费开支大因而减少了他利润。

A plane flew overhead.

一飞机从中飞过。

The plane flew overhead.

飞机在头顶上飞。

The trees arch overhead.

树木在头顶上弯成拱形。

It is equipped with asphalt return tube, anti-puffing pressure vent valve, anti-aging overhead nitrogen valve, thermometer, volumeter and output asphalt rapid discharge valve and coupling.

配备沥青溢流管、防冒液呼吸阀、防老化顶置充氮阀、温度计、容量计和输出沥青快速卸料阀及接耦。

Compared with the existing schemes, the proposed scheme can rekey real-time, provide a high level of security and reduce communication overhead at the same time.

与已有方案相比较，此方案能实时地更新组密钥，有着更好安全性并具有较小通信开销。