widens
v.
放宽，加宽， （使）变宽( widen的第三人称单数 );
例句:
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The river widens considerably as it begins to turn east.
河流转向东流时河道大幅度变宽。
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Her outlook gradually widens.
她的眼光渐渐开阔了。
来自《权威词典》
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As the river flows downwards , it widens.
这条河愈到下游愈宽.
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The recession widens in Greece at this moment.
来自VOA
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The legislation widens the scope of protection.
来自VOA
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Widens the application of the requirement for 'due impartiality' to all output.
来自BBC