在放射性衰變的過程中放出β粒子的輻射。 radiation of beta particles during radioactive decay.
衰變由於放射性衰變而解體或縮小 To disintegrate or diminish by radioactive decay.
在放射性衰變的過程中放出α粒子的輻射。 the radiation of alpha particles during radioactive decay.
射氣幾種氡的同位素的放射性氣體，是放射性物質衰變的産物 Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.
地質年代測定通過放射性同位素衰變來測定地質年代 Measurement of geologic time, as through isotopic radioactive decay.
半減期被活的有機體攝入的放射性元素經過生物衰減及放射性衰變過程綜合，其劑量減至一半所需要的時間 The time required for the radioactivity of material taken in by a living organism to be reduced to half its initial value by a combination of biological elimination processes and radioactive decay.
錒射氣氡的一種放射性的，惰性的和氣態的同位素，其半衰期為3。92秒 A radioactive, inert, gaseous isotope of radon, with a half-life of3.92 seconds.
由於受降雨、蒸發、生物活動以及放射性衰變等因素的影響，不同的海區海水????度也不同。 Variations from place to place are due to factors such as rainfall, evaporation, biological activity and radioactive decay.
更別忘了那些昂貴的抗衰老化妝品和大商場及美容店裏的皮膚保養。 And let us not forget all the fancy anti? aging cosmetic products and skin treatments in department stores and beauty salons.
公衆幾乎每天都被“抗衰老”食品、新型維生素以及其他具有神奇功效的食物廣告所包圍。 Almost daily the public is besieged by claims for "no-aging" diets, new vitamins and other wonder foods.
在一種把年輕等同為美的文化中，大多數美國人一直都在與衰老作鬥爭。 In a culture that equates youth with beauty,a majority of Americans is constantly at war with aging.
退化因老化而出現的正常身體功能的持續衰退或退化 A progressive decline or degeneration of normal physiological functioning occurring as a result of the aging process.
去年鼕天，雅芳推出了抗皮膚衰老的護膚品retroactive,並一舉獲得巨大成功。 Last winter, Avon launched Retroactive, an anti-aging skin cream that has been a runaway hit.
功效：通過阻止自由基活動起抗衰老的作用。 What they can do: provide anti-aging protection by guarding against free radicals.
根據基因學家的研究，她可能易於早衰及感染疾病。 She may be susceptible to premature aging and disease, according to geneticists.
作用:葡萄含多酚及具有抗衰老效果的天然抗氧化劑。 How it works: Grapes contain polyphenols, natural antioxidants with anti-aging benefits.
老衰組織的正常硬化 The normal hardening of aging tissue.
現售貨物；現在正在衰老下去的獨裁者 Goods now on sale; the now aging dictator.
如果美國陷入衰退，特別是股市下跌引發的衰退，那麽美國窮人和中産階層者可能突然之間發現自己成了受害的大多數。 If the country fell into recession-especially a recession sparked by a falling stock market-poor and middle-class Americans might suddenly see themselves as an aggrieved majority.
他的健康迅速衰退。 His health is failing rapidly.
剋裏斯托弗·布皮特教授是一位研究衰老問題的專傢。他認為高膽固醇和高血紅蛋白會使男人衰老，低膽紅素會讓女人抗衰老的能力降低。 Professor Christopher Bulpitt, an expert in ageing, said that high levels of cholesterol and the red blood pigment haemoglobin can age men, while low levels of the liver chemical bilirubin may reduce women's ability to retain their youthfulness.
流行病學研究的負責人弘志下方說：“葡萄酒和米酒之所以能夠提高人的智商，可能是由於它們含有像多酚那樣的物質，據信這類物質會延緩人的衰老過程。” " The benefits of wine and sake [rice wine] in raising IQ could be due to substances they contain, such as polyphenol, which are believed to slow the ageing process," Hiroshi Shimokata, head of epidemiology research, said.
大衛·威肯海澤博士在加拿大溫哥華研究衰老問題已有10年時間，他發現一般人的生物學年齡比按時間計的實際年齡要老15年甚至更多。 Dr David Wikenheiser has been studying ageing in Vancouver, Canada, for the past 10 years and has found the average person is 15 or more years older biologically than chronologically.
這種隨着時間流逝的活力衰退就叫做衰老。 This decline in vigour with the passing of time is called ageing.
衰老無情地來臨，接踵而至的是各種各樣的疼痛疾病。 The aches and pains begin as the ageing process inexorably sets in.
膽固醇加上吸煙和日曬可導致衰老。 Cholesterol joins smoking and sunbathing as an ageing agent.