15秒记一个单词第2108个（20秒一个单词第2406个）
15秒记一个单词第2108个（20秒一个单词第2406个）sometimes but not regularly and not often偶尔，偶然，间或:
We only see each other very occasionally (=rarely) .
我们只是难得见一次面。
sometimes but not regularly and not often
偶尔，偶然，间或:
15秒记一个单词第2108个（20秒一个单词第2406个）sometimes but not regularly and not often偶尔，偶然，间或:
We only see each other very occasionally (=rarely) .
我们只是难得见一次面。
sometimes but not regularly and not often
偶尔，偶然，间或:
