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什么时候改善伙食都为时未晚。
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It's never too late to improve your diet.
Going on a diet blindly may do great
harm to your health.
go/be on a diet 节食
It's of great importance to keep
a balanced diet.
The muscleman is showing his muscles.
There are many kinds of nuts, which contain a lot of vitamins.
They are wearing protective clothing,
which can protect them from harmful
gases.
a balance 天平；秤
While walking on the rope, he failed to
keep his balance and fell off it.
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keep one's balance
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lose one's balance
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keep the balance of
nature 保持生态平衡
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Before making an important decision,
we should balance its advantages
against/and its disadvantages.