研究人员发现了一种以前不为人知的酶，正是这种酶帮助形成了一种使人流泪的化学成分。
The researchers identified a previously unknown enzyme1 that helps form the chemical that makes us cry.
希望失恋的朋友找回遗失的自我，找到真爱的朋友学会珍惜，不要让心伤使你爱的人流泪。
Hope brokenhearted friends find missing self, finding true love of friends to cherish, don't let the heartache that you love them.
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