您要查找的是不是：
- I always thicken my soups by adding flour. 我总是加面粉将汤调浓。
- It's too hot to concentrate on book. 热得不能集中心思看书。
- I must concentrate my energies on decorating today. 我今天必须集中精力搞装饰。
- I can't concentrate on my work when I'm tired. 我累了就无法集中精力工作。
- Don't put me off when I'm trying to concentrate. 我正要集中注意力呢，别打搅我。
- We must concentrate our attention on efficiency. 我们必须把注意力集中在效率上。
- She couldn't concentrate on a book very long. 她不能长时间专心读一本书。
- thickened concentrate 浓密精矿
- I must concentrate upon my work now. 我现在必须集中精力工作。
- Thicken the soup by adding flour. 加点面粉使汤变稠。
- His speech thickened as he drank on. 他不断地喝酒，说话也越来越不清楚了。
- Birds concentrate (in places) where food is abundant. 鸟聚集在食物丰盛的地方。
- The cook thickened the sauce with flour. 那位厨师用面粉将调料变稠。
- Mother thickened the gravy with flour. 妈妈用面粉把肉汁调浓。
- She felt ill. She went to work, however, and tried to concentrate. 她病了。然而她照旧去上班，并且尽力集中精神工作。
- The ship was frozen in as the ice thickened. 冰结得越来越厚，船被封冻在里面。
- We must concentrate our efforts on improving education. 我们必须致力於改进教育工作。
- The cook thickened the sauce with flour . 那位厨师用面粉将调料变稠。
- You can thicken the soup with flour. 你可以用面粉使汤变浓。
- He added some flour to thicken the soup. 他加了一些面粉使汤浓些。
