The Beginning
1、often adv.时常; 常常; 往往; 大多;
2、[例句]The disease often goes/ remains undetected for many years.这种疾病经常潜伏多年而不被察觉。
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3、[其他]比较级：more often 最高级：most often。
THE END
TAG:
1、often adv.时常; 常常; 往往; 大多;
2、[例句]The disease often goes/ remains undetected for many years.这种疾病经常潜伏多年而不被察觉。
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3、[其他]比较级：more often 最高级：most often。
TAG:
