origin-tracing的例句（origin-tracing在句子中的用法）

• ...theories about the origin of life... 有关生命起源的各种理论
• ...compounds, of animal, vegetable or mineral origin. 动物源性、植物源性或矿物源性的化合物
• If it's possible, track the rumour back to its origin... 如果可能，应追查谣言的源头。
• ...their commitment to a society based on equality for all citizens irrespective of ethnic origin... 他们承诺建立一个不分种族出身、全民平等的社会
• The research effort has focused on tracing the effects of growing levels of five compounds... 研究重点追踪了5种化合物含量上升的影响。
• Rocks can be classified according to their mode of origin... 可以根据岩石的成因对其进行分类。
• The singing of Christmas carols is a custom derived from early dance routines of pagan origin... 唱圣诞颂歌的风俗源自异教徒早期的舞蹈仪式。
• The public is urgently requested to assist police in tracing this man... 紧急要求公众帮助警方追踪此人。