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- allowed beta decay 容许衰变
- In some kinds of beta decay, a nuclide loses surplus positive charge by emitting a positron (in the same event, a proton becomes a neutron, and neutrinos are also given off). 以某种贝它衰减，一个核素靠发出一个正电子失去剩余正电荷(在相同的事件中，一个质子变成一个中子，而且也发射微中子)。
- THE ADVANCE OF IHEORY OF BETA DECAY 衰变理论的提出
- What made the Roman Empire decay? 罗马帝国为何衰亡？
- Old civilization may fall into decay. 古老的文化可能会渐渐衰落下去。
- No one is allowed to get his ticket out of turn. 任何人都不准不按次序买票。
- The empty house has fallen into decay. 那座空房已成一片颓垣。
- The tree exhibited signs of decay. 那棵树显示腐蛀的迹象。
- Flashes are not allowed to be used in this museum. 这个博物馆里不准使用闪光灯。
- The road is too narrow to allow the passage of gondola. 这条街太窄，大型货车不能通过。
- His mental decay is distressing. 他的智力衰退令人苦恼。
- Growth and decay are vital processes. 生长和衰亡是生命过程。
- The dentist could detect no decay in her teeth. 牙医检查了她的牙，未见有龋齿。
- He allowed that I had the right to appeal. 他同意我有权上诉。
- Cavities in teeth are caused by decay. 牙齿的蛀洞是由蛀蚀造成的。
- Cars are not allowed to go through the city centre. 禁止汽车从市中心穿行。
- The Press were not allowed to attend the trial. 新闻界人士不得出庭旁听。
- I was allowed once into his inner sanctum. 我有一次获准进入他的内室。
- Human remains, especially after cremation or decay. 骨灰人的遗骸，尤指在火化或腐烂后
- Those boys have been allowed to run wild. 那些男孩子无人管教肆无忌惮。
