Medullary rays
[医] 髓质射线
🧩 词语组成解析
a. 骨髓的, 髓质的, 延髓的\\n[医] 髓的, 髓状的
n. 射线；[俚]日光浴；光线（ray的复数）
🗣️ 情景例句
We can write letters. It's cheaper than calling.
我们可以写信就好，那比打电话便宜。
I came to Harvard on a scholarship.
我是靠奖学金来哈佛大学求学的。
We are prohibited from smoking on school grounds.
我们被禁止在校园内抽烟。