I devoted this month's Working XML to analyzing the HC system, researching algorithms, and designing the main classes and packages.

我在本月的“使用XML”专栏中专门分析了HC系统，并研究了算法和设计了主要的类和包。

youdao

Working on the project in parallel with our classes took careful juggling and quite a few late nights as we got to grips with the ins and outs of services in the world of fruit fly research.

在上课的同时进行这个项目，意味着做出仔细的安排，并且在相当多的时候工作到深夜，而我们也逐渐了解果蝇研究界服务方面的门道。

youdao

London has become one of the dearest cities in the world, and the young and the middle classes working outside financial services find it ever harder to get a foothold.

伦敦也成了世界上生活最昂贵的城市之一，在非金融服务领域工作的年轻人和中产阶级越来越感到难以在这个城市立足。

youdao

His Croatian descent appeals to Ohio's white working-classes, many of whom are of central European stock.

ECONOMIST: Ohio

Livesey spent his life campaigning for the working classes - despite becoming rich selling cheese - opposing the workhouses in favour of giving the poor the chance to better themselves through education and abstinence.

BBC: A History of the World in Lancashire

The 1, 330-pupil school hopes to reopen next week, with some classes working four-day weeks because of the shortage of space.

BBC: Dorset school fire pupils to get exam grades