They are also among the most popular reptile pets in the United States, despite being quite difficult to care for properly.

它们也是美国最受欢迎的宠物之一，但饲养得当颇为不易。

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It is difficult to care for someone thousands of miles away, or for those at hand who do not act or dress conventionally - the so-called hippies, for example.

我们很难关心那些生活在千里之外的人，也很难关心那些生活在身边但行为举止、穿着打扮反传统的人，所谓的嬉皮士就是一例。

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Orchids are the most popular plants in the UK, but can be surprisingly difficult to care for. Fake-orchid fan Huma Qureshi learns how to look after the real thing.

兰花在英国是最受大众喜爱的植物，但兰花养护对假兰花迷是出奇的困难，在得到真品之后Huma Qureshi学习了如何照看它。

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It got to be expensive and time consuming and, as the years progressed, it became increasingly difficult to care for his dad.

CNN: Black bag and Blackberry in hand, this doc makes house calls

But Kenneth W Goodman, an ethics professor at the University of Miami, says religious conservatives are pushing laws that would make it difficult to withdraw care even when a patient's wishes are clear.

BBC: A younger Terri Schiavo

Dr Kenneth Goodman, an ethics professor at the University of Miami, says that much of the legislation aimed at making it difficult to withdraw care in end-of-life cases had failed to make it onto the statute books.

BBC: NEWS | Americas | Schiavo controversy still rages