B-b
abbr. 滚珠轴承（ball bearing）；铅笔芯（double black）
🗣️ 情景例句
Shows insufficient evidence of achievement.
缺乏获得成功的足够依据。
It's such a nice change.
真实令人高兴的转变。
Don't let this get you down.
不要为此灰心丧气。