地面理论学习是在地面上教你如何跳伞，由具有多年跳伞经验并取得许可证的教师授课。
Ground school is where you learn to jump, without leaving the ground. The course is taught by licensed skydiving instructors who have been jumping for years.
但在首驾中的司机必须接受培训，取得许可证并因领驾而得到一定报酬。
The driver at the front would be trained, licensed and paid to lead.
自担风险和费用，取得任何出口许可证，并办理货物进口货物所需的一切检验和海关手续。
Obtain at his own risk and expense any export licence and carry out all inspection and customs formalities necessary for the importation of the goods.
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