sinuation
1. In seven years from 2000 to 2006,Sino-Russian trade has much sinuation,but it is rising in generally.
从2000年到2006年的7年时间里,中俄贸易虽然一波三折,但总体上还是呈上升趋势。
2. The equipment renewal or remake is a long-term hard task and the sinuation or conflict probably appears.
摘要设备的更新改造是实验室工作一项长期而又艰巨的任务。