To test the idea, he and colleagues recreated salmon redds in an experimental flume.

为了验证这个想法，弗莱米尔和同事在实验水槽中重建了鲑鱼的产卵区。

That little hole is called a redd. That's where the salmon lays her eggs.

这个小洞被称为“鲑鱼产卵区”。即鲑鱼产卵的地方。

The traveller with the cart was a reddleman—a person whose vocation it was to supply farmers with redding for their sheep.

赶车的是个红土贩子，他的行当是把红土卖给乡下人去染绵羊。

The children seeing their little duties lie in action close around them, began to try each one to do something that she suggested towards redding up the slatternly room.

孩子们看到他们的小职责就在他们身边， 开始尝试每个人都做她建议的事情来红这个肮脏的房间。