力波垫：垫子的弹性以及滑度必须在赛前经由世界跆拳道联盟认证通过。
Elastic mat: the degree of elasticity and slipperiness of the mat must be approved by the WTF before the competition.
调查发现，2009年航空公司的整体客户满意度连续第三年下滑，创下了四年的新低。
The study finds that overall customer satisfaction with airlines in 2009 has declined for a third consecutive year to a four-year low.
以一个小于等于45度的角度靠近墙，速度越快就滑的越远。
Approach the wall at about a 45 degree (or even a little less) Angle. The faster you are going the longer you will ride.
应用推荐