What is the radical of the word "trillion"?

Mega？ Pinyin: zhào

Interpretation: Cracks caused by burning tortoise shells in ancient times: divination; A sign or sign before something happens, an omen; Several numbers, equal to millions (trillions in ancient times): megacycles (electromagnetic wave frequency unit, the frequency of one million cycles per second is one megacycle); Last name.

Group words:

Omen? A sign before something happens, a prediction or an impending sign. From "Biography of Chen Shu Mao Xi": "I am not a wise man and dare to plan ahead."

Signs? Zhēng zhào means a premonition or an impending sign. Mega, pictographic. The seal script is like a crack in the tortoise shell.

Xue Rui is a good year? Rui: Geely's. The timely winter snow indicates that the coming year will be a bumper harvest year. From Qubo's "Bridge Dragon Label" XIX: "As the saying goes, there must be a good harvest in snow, and the wheat will be harvested next year."

Example:

Those low and thick clouds are usually signs of rain and snow.

Therefore, more and more serious historical research is a sign that the human spirit is gradually maturing.

As the saying goes, the harvest of crops will be particularly good next year.