1.【动】硬头鳟
1.an anadromous rainbow trout with a silver coloration, popular for sport fishing.
1.Unlike other Pacific Salmon, rainbow trout and steelhead do not necessarily die after spawning (they may spawn as many as four times).
不像其它的太平洋鲑类，虹鳟和刚头产卵以后并不死掉。
2.Biologist Andrew Berger sliced open a young steelhead and tucked a vitamin-sized transmitter into the folds of its belly.
切开一条虹鳟幼鱼的腹部，在折皱处塞入一只像维生素片大小的传感器。
3.All Pacific salmon, including male steelhead , undergo changes when spawning or migrating to spawn.
所有的太平洋鲑类，包括雄性的刚头，在产卵或者是洄游产卵的途中都要经历形态变化。
4.Steelhead populations and rainbow trout populations can and do interbreed at different levels.
刚头种群和虹鳟种群可以杂交，实际上也发生不同水平的杂交。
5.A steelhead is a rainbow trout which migrates into the seas and then they come back up the streams and they re caught in the streams.
钢头就是移居到海洋的虹鳟。当它们回到河溪就在那儿被捉了。
6.The area in question is home to 1, 600 threatened species, including grizzly bears, elk, lynx and cut-throat trout and steelhead.
受争议的区域是1,600多种濒危物种的家园，其中包括灰熊、麋鹿、割喉咙鳟鱼和虹鳟。
7.Steelhead usually lack the pink stripe and have chrome-colored sides.
刚头通常没有粉色的条带，取而代之的是镀铬色的银白。
8.I shot my first steelhead.
我钓到了第一条虹鳟。
9.The anadromous form called "steelhead" migrate to the ocean, though they must return to fresh water to reproduce.
溯河型（称作“刚头”）迁徙到海中生活，尽管它们需要回到淡水中产卵。
10.Report on the Pathogenic Survey of Gill - Rot Disease of Steelhead Trout Salmon gairdeni
虹鳟烂鳃病病原调查报告