科普

kē pǔ popular science; popularization of science; abbr. of 科學普及|科学普及

一

yī one; 1; single; a (article); as soon as; entire; whole; all; throughout; "one" radical in Chinese characters (Kangxi radical 1); also pr. [yao1] for greater clarity when spelling out numbers digit by digit

下网

xià wǎng to cast a fishing net; (computing) to go offline

信

xìn letter; mail; CL:封[feng1]; to trust; to believe; to profess faith in; truthful; confidence; trust; at will; at random

彩票

cǎi piào lottery ticket

的

de of; ~'s (possessive particle); (used after an attribute); (used to form a nominal expression); (used at the end of a declarative sentence for emphasis)

dí really and truly

dì aim; clear

dī see 的士[di1 shi4]

百科

bǎi kē universal; encyclopedic; abbr. for 百科全書|百科全书[bai3 ke1 quan2 shu1]

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