grant 无偿帮助
import duties 进口关税
make concession 让步
margin 盈余
loss 损失
official statistics 官方统计
quotations 报价
references 照会对象
self-restraint 自我设限
terms 支付条款
trade deficit 贸易赤字
trade surplus 贸易盈余
untied loan 自由融资
World Trade Organization 世界贸易组织