The analysis of combining ability showed that Fatherplant 290-1 and Male sterile line 240 which had high GCA could be regarded as good crossing parents.
配合力分析表明：一般配合力较好的父本290-1和雄性不育系240可作为优良的杂交育种亲本；
2
His father is a machinist in an aerospace plant.
他的父亲是一家航空工厂的机械师。
《柯林斯英汉双解大词典》
3
So when Luke was free, he helped his father and Luke learned that a tomato plant does need much care.