Actinide series
[机] 锕系元素
🧩 词语组成解析
n. [化]锕类
🗣️ 情景例句
Are they always that difficult to make?
领结这样难打吗？
Not getting the job was a terrible disap-pointment.
得不到那份工作，叫人失望极了。
Which glasses?
哪几只？