1.The French state imagined itself as a bringer of civilisation to Africa, and the railway was to provide a way for the Congolese to take part in world trade.

imagine...as... 把...想象成

eg.He imagined himself as manager of the company.

他把自己想象成公司的经理I0go)1e1to!;y=Y^f。

provide...for... 为...提供...

eg.The trees provide shade for the animals in the summer.

夏天，这些树为动物提供乘凉的地方Y+#;_y=*!n8[;Q1。

2.It was cheaper to replace workers who died with new ones than to keep them healthy.

replace...with... 用...替代...

eg.It is not a good idea to replace meals with snacks.

用零食来代替正餐这不是什么好主意-)f0)JyRG&M。

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