Patterns of childhood eating can be hard to break when we're adults, which may mean that kids of depressed moms end up dying younger.

童年的饮食模式在我们成年后很难打破，这也许意味那些有着抑郁的母亲的孩子们最后会早逝。

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They've been working hard to break in.

他们一直在努力打入市场。

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She showed the girls it was hard to break the tied chopsticks.

她向女孩们展示了绑好的筷子是很难折断的。

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What's great about this category is there is such a diversity: a comedy next to a really hard-hitting documentary that is going to break you into a cold sweat.

WSJ: Tribeca Film Fest Unveils Remainder of Slate

After a 21-month break from racing, Radcliffe may be hard-pushed to emulate her triumph in New York where she won a thrilling sprint finish over Kenya's Susan Chepkemei.

BBC: Radcliffe to make marathon return

Social networks have been working hard to break into e-commerce.

CNN: Twitter and Amex to let you pay with a hashtag