theory

['θiəri]

n.学说, 理论, 原理, 意见

例句与用法：

Not everyone can understand Einstein's Theory of Relativity.

不是每个人都能读懂爱因斯坦的相对论的。

In this way they can better apply theory to practice.

这样他们就能更好地把理论运用到实践中去。

Only in 1687 did he at last publish his new theory.

终于在一六八七年他发表了他的新理论。

Mary is full of fascinating theories about men and women.

玛丽对男人和女人充满了迷人的想法。

Do you agree to the wave theory of light?

你同意光的波动理论吗？

It is so in theory.

理论上是如此。

词形变化：

名词复数: theories |

详细释义：

n.

1. 学说; 论说; ……论[C][(+of)][+that]

Darwin spent more than twenty years working on his theory of evolution.

达尔文花了二十余年时间研究他的进化论。

2. 理论; 学理, 原理[U][C]

It seems good in theory, but it doesn't work in practice.

理论上它似乎很不错, 但实际上却行不通。

3. 意见; 推测, 揣度[C][+that]

My theory is that we'll have a cold winter this year.

依我看今年冬天会很冷。

Many scientists accept the theory that the universe is growing larger.

许多科学家接受这样的看法:宇宙在不断增大。