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But the traffic jams are still a problem, especially at rush hour.

但是交通堵塞仍是个棘手问题，尤其是上下班高峰期。

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(Fig. B): The more particles we squeeze into the container, the testier they will become, especially if the container happens to be a rush-hour downtown local at 86th and Lex.

（图B）：如果我们把更多的粒子挤入容器中，它们将变得易爆。假如这个容器正好是高峰期在86街和莱克星顿大道路口开往下城的地铁慢车车厢，情况就更是如此。

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(Fig. B): The more particles we squeeze into the container, the testier they will become, especially if the container happens to be a rush-hour downtown local at 86th and Lex.

（图B）：如果我们把更多的粒子挤入容器中，它们将变得易爆。假如这个容器正好是高峰期在86街和莱克星顿大道路口开往下城的地铁慢车车厢，情况就更是如此。

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