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trace这个单词做痕迹解释时可数么
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trace这个单词做痕迹解释时可数么
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[count or uncount] a slight sign that someone has been present or that something has happened:
The intruders were careful not to leave any trace behind them.
trace of:All traces of the damage had vanished.
disappear/vanish without a trace:She was seen leaving the house,then vanished without trace.
可数或不可数都可以
做微量时可数
The intruders were careful not to leave any trace behind them.
trace of:All traces of the damage had vanished.
disappear/vanish without a trace:She was seen leaving the house,then vanished without trace.
可数或不可数都可以
做微量时可数
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