Norephedrine
[化] 降麻黃堿\\n[醫] 去甲麻黃鹼, 降麻黃鹼
??? 情景例句
Then. How can you prove yourself?
你怎么來證明你自己呢？
Business may be troublesome, but idleness is pernicious.
事業雖擾煩，懶惰更害人。
This race, which went on for exactly four exactly four months, was the last of its kind.
這場比賽持續了整整4個月，是這類比賽中的最后一次，