常用结构有：

(be) at/in/on/under + NP 处于…状态

bring/put ... into / to + NP 使处于…状态

(be) at a complete standstill 处于完全停顿状态

(be) at rest 处于静止状态

(be) at work 正在工作(运行)

(be) in a good state of repair 维修良好，处于良好状态

(be) in poor condition / in disrepair 状况不佳／年久失修

(be) in danger 处于危险状态，受到危险

(be) in equilibrium 处于平衡状态

(be) in operation 正在运行，在运行(工作)中

(be) in progress 正在进行，在进行中

(be) in a stable state 处于稳定状态

(be) in a suspended state / in suspension 处于悬挂状态／吊着

(be) in a state of disorder 处于杂乱(无序)状态

(be) in a state of unstable equilibrium 处于非稳定平衡状态

(be) on fire 着火，在燃烧

(be) on test 正在经受试验

(be) on the increase / decrease 正在增长／减少

(be) under construction 正在建造中

(be) under development 正在研制之中

(be) under discussion 正在讨论中

(be) under investigation / study 在调查／研究中

(be) under way 正在进行

If an object is instantaneously at rest , is the force on it necessarily zero?

如果一物体在某一瞬间是静止的，那么它所受到的外力是否必然为零呢?

If a body is acted on by a number of forces and still remains stationary , the body is said to be in equilibrium .

如果一物体受到数个力的作用而仍保持静止状态，我们说该物体处于平衡状态。

The pig-iron comes out of the blast-furnace in a molten state．

生铁呈熔化状态流出高炉。

Metal which is hardened by cold-working may be brought back to its original state / condition by annealing．

通过冷加工而变硬的金属可通过退火恢复到它原来的状态。

The engine should be under normal working conditions during the test．

在试验时发动机应处于正常运行状态。

The surface of the liquid is under a tension．

液体的表面处在张力作用下。

责任编辑：admin