I think you probably know China has adopted a flexible policy in her foreign trade.
我想你也许已经了解到中国在对外贸易中采取了灵活的政策。
If we remain inveterate smokers, it is only because we have so often experienced the frustration that results from failure.
如果我们烟瘾大,戒不掉,那是因为屡戒屡败,失去信心。