H. e. d.
[医] 皮肤单位剂量(X线)
🧩 词语组成解析
[医] 普朗克氏量子常数
[医] 电子\\n[经] 东
🗣️ 情景例句
Marilyn and Richard will be home from the hospital any minute,
Marilyn和Richard随时都会从医院回来，
How can it be so small and heavy?
这样小何以这么重呀？
Yes, I am. Please be careful, Meimei. Don't go too high.
是的，我扶着呢，小心点儿，梅梅。不要上得太高！