提示：点击例句中的单词，就可以看到词义解释

But don 't confuse fast growth with sustainable growth .

但是不能把快速增长和可持续增长混为一谈。

Without that gravity helping you out , you 'll have to push yourself constantly , and that isn 't very sustainable .

没有那种重力帮助你摆脱困难，你将必须不断地推动自己，并且不是能保持的。

The people develop sustainable livelihoods .

灾区人民自我发展可持续的民生。

None of these trends is sustainable .

这些趋势都是不可持续的。

Could sustainable cities save the planet ?

可持续发展的城市能否拯救地球？