By 1916 most of the world's great powers were locked together in seemingly interminable combat.

1916年，在似乎漫无止境的战争中，大多数强国都团结在一起。

In a neutron star, the crust and magnetic field are locked together, so a change in one affects the other.

中子星中的地壳和磁场是锁在一起的，因此其中一个的变化会影响到另一个。

We'd rather be locked up together, than out on the streets alone.

我们宁愿被关在一起 也不愿独自在街头流浪。