plutonium
n[U]
(chemistry 化) artificially produced radioactive metallic element, derived from uranium and used in nuclear reactors and nuclear weapons 金不. =>App 10 见附录10.
🗣️ 情景例句
OK, Richard. That's terrific.
很好, Richard ,真不错。
Sometimes the snow was so deep we could tunnel through it.
偶尔雪会积到可以造隧道那般的深度。
Growth, however, brings new problems and concerns.