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双语新闻播报(May 17)

chinadaily.com.cn 2023-05-17 16:35


> Report predicts over 10b global tourist arrivals in 2023

Tourists pose at the Temple of Heaven in Beijing during the May Day holiday. [Photo/Xinhua]


The number of international tourist arrivals is expected to reach 10.78 billion, 74.4 percent of the 2019 level, according to the Report on World Tourism Economy Trends 2023 issued last week.


In 2023, the global tourism revenue will reach $5 trillion, recovering to 86.2 percent of the 2019 level, said the report jointly released by the tourism research center of the Chinese Academy of Social Sciences (CASS) and the World Tourism Cities Federation.


The number of 2022 global tourist visits was 9.57 billion, and global tourism revenue last year reached $4.6 trillion, the report said.


"The global tourism economy is steadily recovering, and the global tourism industry will embrace a brighter future," said Song Rui, director of the tourism research center at the academy.


"However, we should also see that tourism recovery lies in the development of the global macro economy, and uncertainties in the global economy will still affect the prospect of tourism," Song said.

> Soap can make humans more attractive to mosquitoes, study finds



Lathering up with soap might seem like a reasonable mosquito-evasion strategy on the basis that if they can’t smell you, they can’t bite you.


However, a study suggests that rather than helping you go incognito, soapy fragrances could make you a more attractive target.


The scientists behind the research said mosquitoes may be attracted to soap because, when they are not feeding on blood, they supplement their sugar intake with plant nectars.


“The fact we are taking those flowery, fruity smells and putting them on our bodies means that now the same object smells like a flower and a person at the same time,” said Clément Vinauger, who led the work at Virginia Tech. “It would be like waking up and smelling something that was like both coffee and muffins. Very appealing.”


However, the study also noted that the effects of soaps differed somewhat between people, possibly due to interactions between the soaps and each person’s unique odor profile.


Vinauger said: “It’s remarkable that the same individual that is extremely attractive to mosquitoes when they are unwashed can be turned even more attractive to mosquitoes with one soap, and then become repellent or repulsive to mosquitoes with another soap.”


The scientists concluded that soap choice could partially explain why some people are mosquito magnets while others get off bite-free.


The study recruited four volunteers who submitted fabric samples that they had worn as a sleeve while either unwashed or after washing with four different brands of soap – Dial, Dove, Native, and Simple Truth. Female mosquitoes – only females feed on blood – were observed landing on the fabric samples to give an indication of their preference. Fabric was used rather than exposing the volunteers themselves, to exclude the effects of exhaled carbon dioxide, which is another important cue for mosquitoes.
研究人员选择了4名人类志愿者,提交了他们在未洗澡或用四种不同品牌的肥皂(Dial,Dove,Native和Simple Truth)清洗后所穿的袖子织物样本。观察雌性蚊子(只有雌性蚊子以血为食)落在哪些织物样品上,从而判断它们的偏好。为了排除呼出的二氧化碳的影响,研究使用织物而不是直接暴露志愿者皮肤,二氧化碳是另一个主要影响因素。


Washing with Dove, Dial and Simple Truth increased the attractiveness of some, but not all, volunteers, while washing with Native soap tended to repel mosquitoes. The relatively repellent effect of Native could be linked to its coconut scent, the scientists said, as there is some evidence that coconut oils are a natural deterrent for mosquitoes.
用Dove、Dial和Simple Truth牌香皂清晰增加了部分(但不是全部)志愿者对分子的吸引力,而用Native牌肥皂更驱蚊。研究人员称,Native牌肥皂驱蚊效果相对较好可能与其椰子香味有关,因为有证据表明椰子油具有驱蚊效果。


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