—When catching a fish, play it quickly and keep the fish in the water as much as possible.
(Don’t’ use a net in landing the fish) and release it quickly to prevent it from dying.请问括号里头做什么解释？
特别是in landing 看不懂啊．

land the fish
这里的land作动词，使……上岸，可以翻译成：把鱼拉/钓/..上岸（针对不同大小的鱼方法不同啦）
—When catching a fish, play it quickly and keep the fish in the water as much as possible.
Don’t use a net in landing the fish and release it quickly to prevent it from dying.

—当你抓鱼的时候，动作快一点，让鱼尽可能多的时间在水里。
不要用网把鱼网上岸，然后很快把它放掉以免它死掉。