Hb
abbr. [军] 厚膛壁身管（Heavy Barrel）
📖 牛津释义
HB
abbr
缩写 = (of lead used in pencils) hard black (ie medium hard) （指铅笔芯）硬黑（即硬度适中）
an HB pencil 一支HB的铅笔. Cf 参看 B, H.
🗣️ 情景例句
to live with my son and his family.
和我儿子和他的家人住在一起。
We are supposed to help each other.
我们理应彼此帮助。
Next Annie took me by the hand and taught me how to jump.
接着，她又拉着我的手，教我如何跳。