Eustele
n. [植]真中柱( 存在于大多数裸子植物和被子植物的茎内)
🗣️ 情景例句
I prepared lamb chops,
我准备了羊肉，
What's the height of the building?
这座楼有多高？
an illness which at twelve would knock us over,
使我们在12岁时病倒的疾病，