However, one major obstacle is getting cells grown in a lab dish to form 3-d shapes instead of flat layers.
但一个主要的障碍就是如何让培养皿中的细胞生长成三维的形状而不是仅仅在平面上生长。
The "d Flat Major Prelude" is a good example of this: the left hand begins with the raindrop accompaniment while the right hand carries the melody.
“降d大调前奏曲”就是一个很好的例证。一开始，左手以雨滴般的伴奏切入，同时旋律从右手流淌而出。
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