Researchers have still to decide whether smell is one sense or two—one responding to odours properly and the other registering odourless chemicals in the air.
研究者们还需要判断嗅觉到底是一种还是两种感觉，一种感觉回应气味本身，另一种感觉记录空气中无味的化学成分。
Pure air is colourless and odourless.
纯空气是无色无臭的。
这些气体没有气味。
Folic acid is a yellowish to orange, crystalline powder; odourless or almost odourless.
叶酸是淡黄色至橙色结晶粉沫，无臭或几乎无臭。
It is a white crystalline and odourless powder.
它是一种白色结晶粉末，无气味。
Our new product will keep your bathroom clean and odourless.
我厂新产品能保持您的浴室洁净无味。
At room temperature, water is a colourless, odourless, tasteless liquid.
室温下，水是无色、无嗅、无味的液体。
The extracted protein is odourless and white and its productivity is high in the vicinity of 90%.
用酸法提取的鲢鱼肉蛋白质无腥味，色泽洁白，蛋白质产率高，可达90 %左右。
A colourless, odourless, tasteless gas, it makes up 78% of Earth's atmosphere and is a constituent of all living matter.
无色、无臭、无味的气体，占地球大气的78%，也是所有生物体的组成部分。
It took several minutes to explain the concept to Mr Chang, who ultimately concluded that an odourless durian would flop in his country.
向常先生解释“无臭榴莲”的概念得花上几分钟，最终他指出无臭榴莲在他的国家没有销路。
'Oh no, this is the beginning of the end,' said Bob Halliday, a Bangkok-based food writer, when told about the odourless durian. 'Making a non-smelly durian is like a thornless rose.
“噢，不可以，这是结束的开始啊，”当谈论到无臭榴莲时，常驻泰国曼谷的美国美食作家BobHalliday说，“没有臭味的榴莲就如没有刺的玫瑰。”
Poplar wood is colourless, odourless and tasteless, making it highly suitable for fruit boxes, medical tools, chopsticks, flooring and furniture and manufacturing pulp and paper.
杨树无色、无臭、无味，非常适宜制作水果箱、医疗工具、筷子、地板和家具，以及用来制造纸浆和纸张。
无臭，有涩味。
无臭，有涩味。
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