For instance,Americans will never forget the hospitality shown to our pilots who were shot down
over your soil during World War II,and cared for by Chinese civilians who risked all that they had by doing so.
例如,在二戰(zhàn)期間,在美國國土上,美國人永遠(yuǎn)都忘不了那些被擊落的中國飛行員給過他們的熱情救助,以及中國人民不顧一切冒險送上的關(guān)愛.
they had是指 all that they had,by doing so 是指care for 這件事...
意思是指 中國人民把它們擁有的一切都冒險不顧了,用來關(guān)愛美國人.by doing so是固定的詞組嗎？by doing sth,這是個固定詞組，意思為通過做某事。。。來達(dá)到什么目的。。。by doing so ,也可以當(dāng)做固定詞組，就是通過這樣做的意思。