1. Early next morning, she heard planes passing overhead and wondered how she could send a signal.
    第二天清晨，她听到头上有飞机飞过，却不知道怎样才能发出信号，

2. Early next morning, she heard planes passing overhead and wondered how she could send a signal.
    第二天一大早，她听到头顶上有飞机飞过，但不知道怎样才能发个信号。

3. The sun is hottest when it is overhead.
    太阳在头顶上时是最热的时候。

4. Late-night parties in apartment blocks, noisy neighbours, vehicles of all kinds, especially large container trucks thundering through quiet villages, planes and helicopters flying overhead,
    大声吵闹的邻居，各式各样的车辆，特别是穿越寂静的村庄的集装箱卡车，从头顶飞过的飞机和直升机，被带到公共场所、

5. This new technology promises to keep food products moving smoothly on and off supermarket shelves, which will help keep overhead down and prices stable.
    这种新技术可望使在超级市场里的食品上下货架顺利进行，这将能降低管理费用，保持价格稳定。

6. A flock of wild geese flew overhead.
    一群野鹅从头顶飞过。

7. Such administrative overhead in a business is analogous to the cost of government in a nation.
    一家企业的行政管理性费用与一个国家政府的开销是类似的。

8. She shyly extended both hands toward him, the brass fingernails shining in the overhead light.
    她害羞地将两只手伸向他，黄铜指甲在头顶射下的灯光下闪闪发光。