Scientists in the Netherlands have trained bees to identify COVID-19 through their sense of smell, according to a press release from Wageningen University.
The research was conducted on more than 150 bees in Wageningen University’s bio-veterinary research laboratory.
The scientists trained the bees by giving them a treat — a sugar-water solution — every time they were exposed to the scent of a mink infected with COVID-19. Each time the bees were exposed to a non-infected sample, they wouldn’t get a reward.
Eventually, the bees could identify an infected sample within a few seconds — and would then stick out their tongues like clockwork to collect the sugar water.
Bees aren’t the first animals to detect COVID-19 by scent. Researchers have also trained dogs to distinguish between positive and negative COVID-19 samples from human saliva or sweat with fairly high levels of accuracy.
treat：名詞，招待；獎勵。例句：It’s my treat.（我請客。）
expose：動詞，暴露。例句：He damaged his leg so badly in the accident that the bone was exposed.（他在意外中大腿受重傷，骨頭都露出來了。）
clockwork：名詞，鐘錶裝置；發條裝置。例句：After the clockwork of the watch was cleaned, the watch kept perfect time.（那只手錶的發條裝置擦乾淨後，走起來就非常精確了。）