melatonin
🇺🇸
/ˌmeləˈtəʊnɪn/
🇬🇧
/ˌmeləˈtəʊnɪn/
noun
R
A hormone that helps control sleep and wakefulness in people and animals. It is sometimes used to help with sleep problems.
Taking melatonin before bedtime can help you fall asleep faster.
在睡前服用褪黑素可以帮助你更快入睡。
translation
褪黑素
词形变化
Plural
melatonins