1. over the limit 超过极限
Unfortunately, all the political theatre over the limit often has a cost.
不幸的是，所有超出限度的政治闹剧都得付出代价PnS4q+lS573XM^mkMyY。

2. power failures 停电
He said the bags were for use in emergencies such as power failures.
他称这些袋子是在停电等紧急情况下使用的e,AEfJ*beDA[f9uAj。

3. heighten the risk of 提高……的风险/可能性
In another study, researchers found mutations on chromosomes 2 and 16 that seem to heighten the risk of cancer.
另一项研究中，研究人员们发现，疑似能够提高癌症风险的2号染色体和16号染色体出现了突变;q~__NYj#c+&.B。

4. appear to 似乎
These thousand carp ponds appear to have secret attraction to me.
这千鲤池似乎对我有一种神秘的吸引力fxih*4[e+hg|b]8Ae。