B. u.
[医] 棱底向上
🧩 词语组成解析
[医] 单位
🗣️ 情景例句
Why don't you look at some houses, Marilyn?
何不去看一看房子呢， Marilyn？
A strong grip was necessary to hold onto the large dog.
若要牵住大狗，必须用力握住皮带。
Each of the four cables contains 26,108 lengths of wire.
4根钢缆中的每根由26，108股钢绳组成。