n.买卖；贸易
trade的现在分词.
Trading on the Stock Exchange was light today. 证券交易所今日交投平平。
The old trade in black ivory is on more. 昔日非洲黑奴的买卖已不复存。
The trade is clogged with restrictions. 贸易因诸多限制而受阻。
He is in the secondhand car trade. 他是从事二手车买卖的。
At the time of this news release, trading had reached its lowest point. 到这次新闻发布时，贸易量已达到最低点。
n.内部贸易
