Conservationists in South Africa are infusing a special red dye into the horns of live rhinos.

南非环保人士将一种特殊的红色染料注入活犀牛的角中。

We marked a weak rip current with red fluorescent dye, which otherwise would not have been apparent.

我们用红色荧光染料标记了一个微弱的离岸流，否分不明显。

It's either red or pink dye, okay?

-要么是红色染料要么是粉色染料，好吗？

This bright red dye is produced by a specific kind of true bug: female cochineal scale insects.

这种鲜红色染料是由一种特殊的真正昆虫产生的：雌性胭虫。

On Saturday, California Governor Gavin Newsom signed a law that bans Red dye No.3 and other potentially harmful food additives and consumer goods.

上周六，利福尼亚州长文·纽森签署了一项法律，禁止使用红色染料3号和其他具有 潜在有害物质的食品和消费品。

Today, the main exporters of the red dye are Peru and the Canary Islands, where the bugs are farmed on prickly pear plantations.

今天，红色染料的主要出口国是秘鲁和那利群岛， 那里的仙人球种植园养殖了这种虫子。

It's name comes from the Moroccan city Fez, the city that historically produced dye made from crimson berries to color the hat.

它的名字来自摩洛哥城市非斯，这座城市历史上生产由深红色浆果制成的染料来为帽子着色。

Eosinophils take up a red acidic dye called eosin; their main function is to detoxify foreign proteins, especially those causing allergic reactions.

嗜酸性粒细胞吸收一种叫做伊红的红色酸性染料;它们的主要功能是解除外源蛋白质，特别是那些引起过敏反应的蛋白质的毒性。

As the plants grew, scientists injected the plant stems with red and blue dyes so that they could distinguish between the roots of competing plants.

随着植物的生长，科学家们将红色和蓝色染料注入植物茎中，以便他们能够区分竞争植物的根。

Back in his day, a few scientists had been tinkering with staining tissues, especially with a compound called carmine — a red dye derived from the scales of a crushed-up insects.

在他那个时代，一些科学家一直在修补染色组织，特别是一种叫做胭红的化合物——一种从压碎的昆虫鳞片中提取的红色染料。