These are normal term infant kidneys. Note the fetal lobulations and the smooth cortical surfaces with some attached adipose tissue.
正常足月儿肾脏，可见胚胎期肾小叶；光滑的皮质表面有脂肪组织。
Of note - everything wrote super smooth on this paper. I think it would be excellent for drawing & doodling with markers.
上面这些墨水都不洇纸，纸张很光滑。如果用铅笔用麦克笔手感会更好。
Portamento : frequently, the change from one note to another is done in a smooth transition, rather than using discrete intervals.
滑音：常常在平滑的过渡中由一个音符转到另一个音符，而不是使用离散的音程。
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