Q : I have been a certified diver since 1976.

我在1976年成为一名获得认证的潜水员.

Land himself is a certified diver and former submariner with the U.S. Navy.

兰德自己就是一个有证书的潜水员，也是美国海军的退役潜艇兵。

Land himself is a certified diver and former submariner with the U. S. Navy.

兰德自己就是一个有证书的潜水员，也是美国海军的退役潜艇兵。