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1. ▶ 4:02 This Woman Cured Her Cancer with an Insane Method

   So it's extremely difficult to find viral therapies that work in many different patients.

   因此，寻找适用于许多不同患者的病毒疗法极其困难。

2. ▶ 10:47 Learn Real -Life British English - Birmingham! | Comprehensible Input B2

   It's a difficult decision because actually Birmingham is a big city.

   这很难决定，因为实际上伯明翰是个大城市。

3. ▶ 12:20 Learn Real British English With This Podcast - British Accents! | English Comprehensible Input B2

   The scouse accent is one of the most difficult ones to understand.

   利物浦口音是最难懂的口音之一。

4. ▶ 6:17 English SPEAKING Practice: Fluent Patterns: Common, Everyday Conversational English

   Skilled speakers often include emotional words like overwhelming, exhausting, frustrating, or rewarding instead of just hard or difficult.

   熟练的演讲者通常会使用像“不知所措”、“精疲力竭”、“令人沮丧”或“有意义”这样的情感词汇，而不是仅仅说“困难”或“艰难”。

5. ▶ 5:02 How Tech Will (and Won’t) Replace Your Doctor | TED Intersections

   I still think a lot of the more complicated human difficult decisions that we have to make, there's going to be a central role for doctors and nurses and other types of clinicians who are augmented with AI.

   我仍然认为，在我们需要做出的许多更复杂、更困难的人类决策中，医生、护士和其他类型的临床医生在人工智能的辅助下，仍将发挥核心作用。