nuclear

The country is investing heavily in nuclear power plants to reduce its reliance on coal.

(Chinese) 该国正大力投资核电站，以减少对煤炭的依赖。

A nuclear submarine can remain submerged for months at a time without needing to refuel.

(Chinese) 一艘核潜艇可以一次性在水下停留数月而无需补充燃料。

In many modern societies, the nuclear family has replaced the extended family as the primary social unit.

(Chinese) 在许多现代社会，核心家庭已取代大家庭成为主要的社会单位。

A typical nuclear family consists of a father, a mother, and their dependent children.

(Chinese) 一个典型的核心家庭由父亲、母亲及其需要抚养的孩子组成。