Last year, the economy contracted by 3.8 percent. It was the worst performance in generations.

去年，巴西经济收缩了3.8%。是历代以来的最差表现。

As a result of this contraction, the thin lunar crust bursts and large cracks appear.

由于这种收缩，薄薄的月球地壳崩裂，出现了巨大的裂缝。

That is reassuring. But what about the other bad beats, the premature contractions in the heart's lower chambers?

这就让人放心了。那其他有害心跳，发生在心脏下腔的期前收缩(室性期前收缩)呢?

It doesn't have enough pressure inside the lung to stay open, so it deflates.

在有足够的压力来保持打开的状态，然后就收缩了。

And as it contracted, it broke, it fractured along these amazing geometric faces.

当它收缩，它破裂了，沿着这些惊人的几何面断裂。

After SARS, China suffered several months of economic contraction and then rebounded dramatically.

非典过后，中国经济历经了几个月的收缩才开始出现大幅增长。

The third type of contraction creates a stabilizing force.

第三种收缩方式创造出了一种的力。

This accelerates the shrinking, compressing the core, heating it up even more.

这加速了内核的收缩、压缩，使其温度更高。

And because of length contraction, Stella observes the distance between them shrinking by a factor of 2.

由于长度的收缩，史黛拉观察到她俩的间距离缩小了一半。

The lake's seasonal shrinkage provides abundant food to the waterbirds and helps maintain their habitat.

湖泊的季节性收缩为水鸟提供了丰富的食物，并有助于维持它们的栖息地。

The latest quarterly figures from Japan show the economy has contracted by half a percentage point.

来自日本的最新季度数据显示，日本经济收缩了 0.5 个百分点。

The neutron soup inside of it resists the collapse, and prevents the core from shrinking any more.

它内的中子马力抵抗了坍塌的作用力，并阻止核心的进一步收缩。

India's economy is still struggling, contractingby 7.5% in the three months ending September, year on year.

印度经济仍在苦苦挣扎，截至9月份的三个月里，经济同比收缩了7.5%。

When a country's gross domestic product shrinks for two quarters in a row, a recession is underway.

当一个国家的国内生产总值连续两个季度收缩，经济衰退就开始了。

So the atmosphere cools and contracts, but this increases the pressure inside the planet, so it heats up!

所以大气会冷却收缩，但这增加了行星内的压强，导致温度继续上升！

Retail sales shrank by 3.9 percent, but that was much better than the previous quarter's 19 percent contraction.

零售额下降了3.9%，但与上一季度19%的收缩相比有了明显改善。

This messenger's job is to tell muscle cells to contract. Without that signal, muscles stops working.

这种学信使的作用则是让肌肉细胞进行收缩。有这种信号的话，肌肉便停止工作了。

But this time the opposite thing happens, and the ventricle's in refractory, so it doesn't contract!

但是这一次，相反的事情发生了，心室处于不应期，因此它不会收缩！

Whatever the mechanism, they found that the ant's jaw muscles had contracted so hard, they'd been irreparably damaged.

无论机制为何，他们发现，蚂蚁颚肌收缩得非常严重，已经受到了不可挽回的损伤。

Its their use of calcium and ATP that causes the binding and unbinding that makes sarcomeres contract and relax.

正是它们对钙和三磷酸腺苷的使用导致了使肌节收缩和放松的结合和松弛。