坚持不懈地做...

His first published work,"The Voyage of the Beagle," is a tidied-up version of the log he kept on the five-year trip around the world, and he is unflaggingly meticulous in his observations of the plant and animal life he saw or collected along the way.

他出版的第一本书《小猎犬号见闻录》，是一本经过整理的他周游世界五年的航海日志，他对沿途看到或收集到的动植物做了坚持不懈地细致观察。

The North End is thus a recurring assignment for M.I.T. and Harvard planning and architectural students, who now and again pursue, under the guidance of their teachers, the paper exercise of converting it into super-blocks and park promenades, wiping away its nonconforming uses, transforming it to an ideal of order and gentility so simple it could be 9 engraved on the head of a pin.

North End 也因而被反复作为麻省理工学院和哈佛规划建筑专业学生的作业，在老师的指导下，学生们坚持不懈地在纸上把它变得拥有车辆禁行区和公园散步场所，去除其不适宜的用途，把它转变成一个秩序井然和优雅高尚的理想典范，做起来好象简单得微不足道。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。