1·In the medium term, conventional crossbreeding helped by molecular biology techniques (a technique called "marker assisted breeding") may suffice.
在中期，通过分子生物学技术辅助的常规杂交育种(分子标记辅助育种)就足以满足要求了。
2·In reality, genetic modification differs fundamentally from traditional crossbreeding, and there are very good scientific reasons for being concerned about the safety of GM crops.
在现实中，基因改造与传统杂交育种根本性不同，有非常良好的科学理由使人们要关心转基因农作物的安全问题。
3·But traditional crossbreeding is a slow process.
但是，传统的杂交育种是一个缓慢的进程。