Bh
abbr. 布氏硬度（Brinell hardness）；营业时间（Business Hours）
🗣️ 情景例句
His studies advanced steadily.
他的学业不断进步。
That's really something.
真了不起。
If she comes, she will get a surprise.
如果她来了，她会感到非常惊奇了。