The trade-off between bias and variance is a fundamental concept in machine learning.

"The past is always tense, the future perfect."

The child is not a passive recipient of knowledge but an active participant in the learning process.

臣民的政治自由是每个人对自己安全感的平静心态。

科技能让我们更聪明地捕捞，而不是更辛苦。