✔ 最佳答案
http://en.wikipedia.org/wiki/Try
The term try comes from try at goal, signifying that originally, grounding the ball only gave the opportunity to try to score with a kick at goal.
try 就是嘗試.
觸地冇錯係可以得分, 但係呢幾分唔係主菜, 重要既係觸地之後就有權 [踢龍門] 得更多分. 所以, 觸地就得到 [嘗試] 踢龍門的機會.