a lot of

汉语翻译

例句：

1. I'm under a lot of pressure.
   我的压力很大。
2. China does a lot of trade with many countries.
   中国和许多国家进行多方面贸易。
3. It takes a lot of labor to build a railway.
   修筑一条铁路要花费许多劳动力。