Very little light filters through the canopy of leaves and branches in a rain forest to reach ground level—or close to the ground—and at those levels the yellow-to-green wavelengths predominate.
If not, we either continue until we reach those checkpoints or we close the project, saving time and money.
如果不是，我们或者继续直到达到了这一点，或者停止这个项目，节省时间和金钱。
3
Deflation has become a more dangerous enemy than inflation; with interest rates in many countries at or close to zero, central Banks have had to reach for other tools.