1. The old lady was glad to be back at the block of flats where she lived.
    老妇人回到了她居住的公寓楼，心里很高兴。

2. Quite obviously he felt that it would be much more dangerous for the Soviet Union to be outside any world organization than to be in it, provided it could block actions it did not like.
    显而易见，斯大林感到置身于任何国际组织之外比参与其中要危险得多，但参加必须有一个条件，即它可以不让通过它所不喜欢的行动（即后来的否决权）。

3. A book that remains shut is but a block.
    书本不常翻，犹如一块砖。

4. Once he landed on the roof of a block of flats and on another occasion, he landed in a deserted car park.
    一次，他把飞机降落在了一栋公寓楼的屋顶上；还有一次，降落在了一个废弃的停车场上。

5. It has to be tall because it is like a giant block and tackle,
    井架必须很高，因为它像一个巨型滑轮组。