Pentacite
季戊(四醇)醇酸树脂
🗣️ 情景例句
Yeah!
是啊！
She is free any time you need help.
你需要帮忙时，请随时向她求助好了。
So archaeologists have neither history nor legends to help them to find out where the first 'modern men' came from.
于是，考古学家们既缺乏历史记载，又无口头传说来帮助他们弄清最早的“现代人”是从哪里来的。