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1 ?安全色 安全色(safety colour),传递无压力管道就是没有压力的管道,像工程中的排水,雨水等。一个普通的青年,一枚神秘的戒指,一卷废弃的医书,却改变了他的一生。
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“When gathering, women must be very adept at choosing just the right colour, texture and smell to ensure food safety and quality”he said. “觅食的时候，女性善于通过颜色、气味和外形来判断某种物品是否可以食用且有益健康。” 他说。 - 2
"When gathering, women must be very adept at choosing just the right colour, texture and smell to ensure food safety and quality" he said. 他说，“采集食物时，女人们必须非常熟练地选对颜色、质地和味道，以保证食物安全和食物质。” - 3
When safely stored in a retail or home refrigerator or freezer, it's normal for the colour of meat and poultry to change, according to the USDA Food Safety Inspection Service(FSIS). 根据美国农业部食品安全检验局报道，当肉品在销售、家庭冷藏或冷冻时，肉品颜色发生变化是正常的。
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