› the length of time needed for the radioactivity of a radioactive substance to be reduced by half
“half-life”在英语词典中的解释及翻译
“half-life”在英语词典中的解释及翻译
(half-life在剑桥高级学习词典和同义词词典的解释 ©剑桥大学出版社)
“half-life”的翻译
“每日一词”
reverence
a feeling of respect or admiration for someone or something