而激光手术是一种美容程序，是不可逆的，所以，你必须认识到它的局限性。
And laser surgery is a cosmetic procedure and irreversible, so you have to go into it knowing the limitations.
A-active（热度），为了让读者感受到你是在认真对待你的社交网络，并且认识到它确实对你和你的图书馆起到了作用，你必须保持一定的活跃度。
A-active, in order for your library patrons to view you as being serious about your social networking and for it to work for you and your library, you need to use it on a regular basis.
即使你看了电视上看到它的12集每个是必须充分认识钛的范围，知识和勇气，把人类从地球到月球之行。
Even if you watched this on TV, each of the 12 episodes are a must to fully understand the Titanic scope, knowledge, and courage that took humans into their trip from the Earth to the Moon.
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