Cobalt 60
n. 鈷的放射性同位素, 鈷60
?? 詞語組成解析
n. 鈷, 鈷類顏料\\n[化] 鈷Co
sixty
??? 情景例句
A springer spaniel!
一只激飛狗！
It's a few minutes after two.
兩點(diǎn)過幾分。
Fierce wars between Native Americans and European settlers broke out.
美洲土著人和歐洲殖民者之間發(fā)生了激烈的戰(zhàn)爭。