'They're hard-working, respectable people, and he left them to join a gang of thieves and bad characters, and almost broke his mother's heart. '

“父母可是任劳任怨、清白正派的人，竟跑出来和帮小偷、坏人混在，简直使妈伤心。”

At one time it looked as though he could not live more than a few hours, and I am convinced that it was only through the Dutchman's doggedness that he pulled through.

有段日子看上去连几个钟头也活不过去，我毫不怀疑，之所以能够活下来完全要归功位荷兰画家任劳任怨的护理。