Từ điển trực tuyến - Online Dictionary
once in a while
Concise Dictionary
adv.
+now and then or here and there


Random quote: I have done my best: that is about all the philosophy of living one needs.: Lin-yutang

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Optional: 01/2018:Picture Dictionary

Updated: 05/06/2018:List of Academic Words

Updated: 03/2019: Learning by reading annotated text, reliable state of art and updated news