1·At first, the ancient people looked up at the sun and could tell it was the middle of the day, when the sun was directly overhead in the sky.
起初，古人抬头看太阳，看到太阳正挂在头顶上的时候就知道是正午。
2·Situated at the vertex or highest point; directly overhead.
顶点的在顶点或者最高点的；
3·I didn't know about Apollo 13 then, so the significance of the bright moon shining directly overhead was lost on me.
那时，我不了解阿波罗13号，所以明亮的月光直接照耀在上空包围着我。
4·Shower came with a rain shower head that was directly overhead so you can't keep your hair dry even if you wanted to.
有一个莲蓬头在你的头顶上给你洗澡用，所以即使你想不把头发弄湿也是不可能的。
5·The blue sky was still visible, except directly overhead, where this black mass of cloud was sweeping swiftly northward.
蓝天依旧，只有头顶正上方那团乌云飞快地飘向北方。
6·One of the two dates each year when at noon the Sun is directly overhead at the equator and day and night are of equal length.
一年中出现两次的日子，这一天中午太阳直射赤道，并且白天和晚上有相同时间长度。
7·As he reaches for the delicious, ripe grapes hanging directly overhead, he finds that they are just a little too far for his fingers to grasp.
当他头顶正上方悬挂的美味，成熟的葡萄的一瞬间，他发现他们只不过是有点太远，他的手指掌握。
8·The full fisheye frame shows everything above the horizon, including a lamp-illuminated landscape around the edges, and the zenith of the sky directly overhead.
全帧鱼眼镜头拍到了地平线上所有东西，包括边缘一圈被灯光照亮的地景，正在脑袋上方的天顶。
9·The constellation Bootes will be almost directly overhead. "If the shower is active, sky watchers will see one or two meteors flying out of Bootes every minute."
如果幸运，观测者将每分钟都能看见一两颗流星从牧夫星座飞出。
10·The autumnal equinox and vernal-or spring-equinox are also the only days of the year when a person standing on the Equator can see the sun passing directly overhead.
春秋分日还是一年中唯一的两天，人站在赤道，可以看到太阳从头顶正上方经过。