Elsewhere, magma suddenly forces its way out of fissures in the rocky crust, creating lines of lava fountains that can stretch for 50 kilometres or more.
在别的地方，岩浆会突然从岩层的裂缝中喷涌而出，形成一幕熔岩泉，这个景观甚至能延伸50公里以上。
2
Furthermore the use of some of our armed forces against the enemy's rear is particularly effective because they can disrupt his supply lines and bases.
再则使用若干兵力于敌人后方，其威力特别强大，因为捣乱了敌人的运输线和根据地。
3
There is an exceptional case, three forces with paralleled linesof action, which will be discussed in Chapter 3.