重点讲解：
1. as well 也；还；
例句：It is most often diagnosed in women in their thirties and forties, although I've seen it in many younger women, as well.
这种病一般多发于三四十岁的女性，但我也见过许多更年轻的女性患这种病scGuS#=W2o8。
2. once in a while 偶尔；间或；
例句：Earrings need to be taken out and cleaned once in a while.
耳环要偶尔取出来清洗一下d@jAjX!9y#603ZL!*K。
3. get in contact with 联系；联络；
例句：Finally he managed to get in contact with them.
他终于设法与他们取得了联系gWxLuhG8i^e..;iAh|h。
4. each other 彼此；互相；
例句：They show reciprocal affection to each other.
他们表达了彼此之间的爱慕u2uD405^;OWer。