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<div class="c5">
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This is all English. This is all English. This is all English.
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全是中文的情况。全是中文的情况。全是中文的情况。
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中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
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<div class="c6">
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This is all English. This is all English. This is all English.
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全是中文的情况。全是中文的情况。全是中文的情况。
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中英文混排的情况。Chinese and English. 中英文混排的情况。Chinese and English.
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.c7{ width:300px;word-wrap:break-word;overflow:auto; border:1px solid yellow}
<div class="c7">
safjaskflasjfklsajfklasjflksajflksjflkasjfksafj
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<div class=c7>
This is all English. This is all English. This is all English.
</div>
<div class=c7>
全是中文的情况。全是中文的情况。全是中文的情况。
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