top and bottom翻译
top and bottom的基本解释
读音: 美: 英:
上下：可以有多种含义。
例句
Leave a gap at the top and bottom so air can circulate.在顶部和底部各留一点空隙，这样空气就可以流通了。《柯林斯英汉双解大词典》The top and bottom line of each column on the page should align.版面每栏的头一行和末一行要对齐。《牛津词典》
Concentrations of positively charged particles develop at the top and bottom of the cloud, but the middle region becomes negatively charged.带正电荷的粒子集中在云团的顶部和底部，但中间区域形成的是带负电荷的粒子。
短语
top and bottom limitation 上下限top and bottom process 奥辐德顶底分层炼镍法 ; 分层法 ; 顶底炼镍法 ; 分层操作法
top and bottom blowing 顶底吹炼
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纠错
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