Haul in here, Tahitian; reel up, Manxman.

拖上来，塔希提人；卷起来，马恩岛人。

After a fish bites a fisherman's hook and is quickly reeled up to the surface, the air in its swim bladder begins to expand.

所以当鱼上钩并且快速浮向水面的时候，鱼鳔内的空气会随之膨胀。