重点讲解：
1. join in 加入，参加（活动）；
例句：I will join in the project, heart and hand.
我会满腔热情地参加这项工程;4V;isGbcb@B!*2。
2. kick in 开始生效；起作用；
例句：As discounts kicked in, bookings for immediate travel rose by 15%.
由于开始实行打折，近期旅行的预订量上升了15%3awu9uABVKwQ2+。
3. figure out 想出；理解；弄清；
例句：This is something I have to figure out myself.
这是我自己必须要弄清的事情I|,nswttN[kf[*Gn。
4. in particular 尤其；特别；
例句：Goods which are easily damaged, in particular glasses, need special packing.
容易损坏的商品特别是玻璃，需要特别的包装CL]Wx3eZC60WBW[%n-!。