您要查找的是不是：
- Sweet potato was the staple of their diet. 过去甘薯是他们的主食。
- They grow cotton of long staple. 他们种植长纤维棉花。
- Short stories are her staple reading. 短篇小说是她经常看的读物。
- Cotton is the staple of the area. 棉花是这个地区的主要农作物。
- All its stock in trade is glossy paper backs. 该店的全部现货是光面的平装书。
- My deskmate wanted to trade his pen for my book. 我的同桌想用他的钢笔换我这本书。
- 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。
- He came out with his staple excuse that he was too busy. 他又拿出惯用的借口，说他太忙了。
- There has been some shrinkage in our export trade. 我们的出口贸易量已有些减少。
- Bread, potato and other staple continue to rise in price. 面包、土豆及其他主食的价格继续上涨。
- The new tariffs have put a stranglehold on trade. 新的关税制对开展贸易极为不利。
- The politician cops out on the issue of free trade. 那政客对自由贸易的问题只是一味逃避。
- Britain concluded a trade agreement with China. 英国和中国签署了贸易协定。
- They are engaged in interior trade. 他们从事国内贸易。
- He has never belonged to a trade union. 他从未加入过工会。
- China does a lot of trade with many countries. 中国和许多国家进行多方面贸易。
- Coffee is the staple of this district. 咖啡是这个地区的主要产品。
- It is not good to trade on another's ignorance. 利用他人的无知是不应该的。
