Vesiglandin
精囊腺素
🗣️ 情景例句
So, are there any major cultural differences between our two nations?
我们两国间有什么大的文化差异吗？
She's not at her desk right now.
这会儿她不在办公室办公。
It was the idea of supporting a craft on a 'pad',or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
用一个气垫来支撑船体，低压空或软垫，软垫周围用高压空气环绕。