closely

Scientists are watching the volcanic activity closely to predict any potential eruption.

(Chinese) 科学家们正在严密观察火山活动，以预测任何潜在的喷发。

In this small ecosystem, the population of foxes is closely linked to the availability of rabbits.

(Chinese) 在这个小型生态系统中，狐狸的数量与兔子的供应量密切相关。