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1·The firm openly traded in arms.

这家公司公开买卖军火。《牛津词典》

2·Venetian merchants traded extensively in silk and encouraged silk growers to settle in Italy.

威尼斯商人大量买卖丝绸，并鼓励丝绸种植者在意大利定居。

3·Recently, South African government has taken some actions to protect cycads from being stolen or traded.

最近，南非政府采取了一些措施来保护苏铁不被偷走或交易。

4·They traded as 'Walker and Son'.

他们以“沃克父子公司”之名营业。《牛津词典》

5·She traded her posters for his CD.

她以海报换取他的光盘。《牛津词典》

6·They traded land for goods and money.

他们用土地来换取商品和金钱。《柯林斯英汉双解大词典》

7·Our products are now traded worldwide.

我们的产品现在销往世界各地。《牛津词典》

8·He traded in his old car for a new Mercedes.

他把旧汽车折价添钱买了辆新奔驰。《牛津词典》

9·Its shares are traded on the Unlisted Securities Market.

它的股票在未上市证券交易市场上交易。《柯林斯英汉双解大词典》

10·They could be traded illegally. They would lose popularity.

它们会被非法售出，失去人气。

(1)foreign trade外贸，对外贸易

(1)international trade国际贸易

(1)world trade世界贸易

(1)trade in买卖；抵价购物

(1)trade something for something用某物换某物，用某货换某货

(1)free trade[经]自由贸易