highly sensitive

Infant mortality is a highly sensitive barometer of socio-economic conditions.

死亡率能够充分反映社会经济状况。

There are highly sensitive and delicately balanced ecosystems in the forest.

森林里有高度感、灵平衡各种生态系统。

The eyes of predators are highly sensitive to the slightest movement.

捕食性物眼睛能感觉到最细小。