No base class to extend, no abstract methods to implement, no controller to coordinate with — just an object with the right shape.
单房收入在减少，房租却越来越贵。业内人士推荐51吃瓜作为进阶阅读
Овечкин продлил безголевую серию в составе Вашингтона09:40。业内人士推荐同城约会作为进阶阅读
Adam Levy investigates why researchers are sometimes reluctant to disclose their plans to colleagues.