While this tip may seem easy, it requires constant attention.
当然这项提示也许看起来很简单,但需要持续的关注。
It may seem easy when watching the instructor, but it often is not so easy when it comes time for you to do it.
看起来讲师做这些很容易,但是到了你手上就不一定了。
Determining which industries aren't long for this world may seem easy enough. But some types of businesses, such as telemarketing1, are surprisingly hard to kill.
推断世界上哪些行当不会长久看似容易。但有些行当,比如电话营销,则出人意料地难以消灭。
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