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
if people took the time to read.
只要人们肯花时间去阅读。
The swan sings when death comes.
死期来到,天鹅歌声美妙。
May I use your pen?
我可以用你的笔吗?
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