Perioidic system
[机] 周期系
🧩 词语组成解析
🗣️ 情景例句
You estimate his worth too highly.
你高估了他的价值。
Would you like to have some dinner?
你想吃饭吗？
This head must have been found in Classical times and carefully preserved.
她的脑袋一定是在古希腊罗马时代就为人所发现，并受到精心的保护。