natural red造句

1、The extraction conditions of a natural red pigment from flesh of Hylocereus undutus var.
对从台湾祥龙火龙果果肉中提取天然红色素的方法和条件进行了研究。

2、The main criterion of attending the 2-day festival is that you have natural red hair.
该庆典一年一度，共持续2天。要想参与其中，主要标准就是拥有一头自然的红发，而且当天必须身穿白色衣物。

3、A powdered natural red food pigment was extracted and refined from phaseolus angularis Wight.
从赤豆中提制出一种粉状天然食用红色素，命名为“赤豆红色素” 。