overhead
美[ˌoʊvərˈhed] n.天花板；管理费用，经常费用；船舱的顶板；[体]（网球等的）扣杀
adv.在头顶上；在空中；在楼上；向上
网络日常开支；厂皮；头顶；轻轨
1 . The overhead light was covered now with a white globe.
现在，顶灯已装上了一个白色球状罩子。
来自柯林斯例句
2 . Overhead, the chopper roared and the big blades churned the air.
头顶上，直升机在呼啸，巨大的螺旋桨叶片搅动着空气。
来自柯林斯例句
3 . He disconnected the IV bottle from the overhead hook.
他把静脉滴注瓶从头顶的钩子上拿下来。
来自柯林斯例句
4 . The air reeked of kerosene and huge aircraft rumbled overhead .
空气中散发着煤油味，巨型飞机在头顶隆隆地响着。
来自柯林斯例句
5 . Overhead cranes were lifting giant sheets of steel.
高架起重机正吊起一块块巨大的钢板。
来自柯林斯例句
1.the expense of maintaining property (e.g., paying property taxes and utilities and insurance); it does not include depreciation or the cost of financing or income taxes
2.(computer science) the processing time required by a device prior to the execution of a command
3.(computer science) the disk space required for non-data information (used for location and timing)
4.a transparency for use with an overhead projector
5.(nautical) the top surface of an enclosed space on a ship
6.a hard return hitting the tennis ball above your head
7.located or originating from above;
an overhead crossing
8.above your head; in the sky;
planes were flying overhead
9.above the head; over the head;
bring the legs together overhead
系统开销（计算机网络） overhead，在计算机网络的帧结构中，除了有用数据以外，还有很多控制信息，这些控制信息用来保证通信的完成。这些控制信息被称作系统开销。 制造费用（国际会计） ACCA词汇，成本cost的一种，一般与labour和material并列考虑。 企业的日常管理费用，杂项开支，一般费用