Actinide
n. [化]锕类
🗣️ 情景例句
May I use a knife and fork please?
我可以用刀叉吗？
These clothes are very beautiful, but are too expensive.
这些衣服很漂亮，但是太贵了。
He noticed at once that discipline was slack: the Danes had the self-confidence of conquerors, and their security precautions were casual.
他马上发现丹麦军纪律松弛，他们以征服者自居，安全措施马马虎虎。