1、A gravitational field or an electric field, you can't.
在重力場(chǎng)或者電場(chǎng)里面，就做不到了。

2、From Euler equation to Einstein gravitational field equation
從歐拉方程到愛(ài)因斯坦引力場(chǎng)方程(英文)

3、The gravitational field is so strong that the escape velocity near it exceeds the speed of light.
重力場(chǎng)是如此的強(qiáng)大以致于靠近它的逃逸速度超過(guò)光速。

gravitational field翻譯