... get the hang of it 初步掌握了......；可用于语言学习类话题。 know it backwards and forwards 十分精通……；可用于描述人物的特长。 A dog is man’s best friend. 用于宠物类话题。 ...
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know it backwards and forwards
彻底了解它
以上为机器翻译结果，长、整句建议使用 人工翻译 。
You know, it's not a function just of looking backwards, it's a function of looking forwards and how are we going to be making a series of decisions in a very dangerous world.
CNN: Transcript of Thursday's Democratic presidential debate
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