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
That's right. Grandpa hangs it there for good luck.
是的。爷爷把它放在那儿 以求好运。
Sitting on the fence.
考虑中！
A little. I go to Chinese classes every week.
一点点，我每周去汉语班上课。