英语语法分析

Though it is hard work, it is still a solvable problem.

虽然这是一项艰巨的工作，但仍然是一个可以解决的问题。

That is why today's environmental problems in the poor countries ought, in principle, to be solvable.

因此，原则上当今贫穷国家的环境问题应该是能够解决的。

These are solvable problems.

这些是可以解决的问题。