Sildenafil citrate
[医]枸橼酸西地那非<血管扩张药>
🧩 词语组成解析
n. 西地那非; [医]昔多芬, 一氧化氮样药物, 商品名Viagra（伟哥）
n. 柠檬酸盐\\n[化] 柠檬酸(或枸橼酸)盐(酯或根)
🗣️ 情景例句
China is implementing a family planning policy.
中了在实施计划生育政策。
I've never heard that piece before.Who wrote it?
我从来没听过那乐章，那是谁写的？
let alone distances of tens or hundreds of light years.
更不用说几十光年或几百光年远的地方了。