Perioidic system

[机] 周期系

🧩 词语组成解析

system ['sɪstəm]
n. 体系，系统;制度;身体;方法;
sy(syn-=together)+ste(to stand)→系统；体系；秩序；制度；方法

🗣️ 情景例句

My brother Robbie ...
我弟弟Robbie……
The plans are not even made yet.
这计划还不曾有人策划过。
But they still put their stockings at the end of their beds.
但他们仍然把自己的长统袜挂在床脚边。
更多情景英语 ›

🔤 更多 P 开头的单词

pantomime dame
paroptesis
penetration rate
phenosafranin
planoconvex
pointed file
praseodymium sulfate
prefocusing
全部 P 开头单词 ›