in her casetravelling abroad to raise money to buy arms.
她在国外旅行还募集资金购买武器。
2
In the case of three slits, the calculation produces three terms describing interference between waves travelling through the three possible pairs of slits.
在三缝的情况下，对通过3个缝隙的波相互之间的干涉计算会产生三项级数。
3
But in that case, someone standing on the shore would find that a bullet fired in the direction in which the boat was heading would be travelling faster than one fired in the opposite direction.