There's no sense in going by boat when the plane is just as cheap and much quicker.
既然乘飞机和坐船一样便宜而且还快得多,那么就没有理由去坐船。
but fearing that she would never see Rastus again -- the letter had made that quite clear -- she changed her mind.
但又害怕再也见不到拉斯特斯——这点,信上说得十分明白——于是便改变了主意。