短语讲解：
1. Now, this is a huge increase, much greater than what we even hoped for when we started our study.
hope for希望, 希望得到
例句：In this we hope for your help.
在这方面我们希望得到你们的帮助。
2. In this new study, patients were injected with adult stem cells taken from their own hearts.
take from从……取得; 减少;降低
例句：The slight damage did not take from the engine's power.
那点轻微的损坏并不减低引擎的威力。
3. But a commentary published with his paper says Bolli's findings "raise new optimism" because of the study's rigorous quality and unexpectedly good results.
because of因为, 由于
例句：I came back because of the rain.
因为下雨, 所以我回来了。
4. But in this case, after six months there was no improvement in heart function.
in this case既然这样
例句：You don't like your job. In this case why don't you leave?
你不喜欢这份工作, 为什么不辞掉它呢?
