深入

shēn rù to penetrate deeply; thorough

探索

tàn suǒ to explore; to probe

1999app 超

chāo to exceed; to overtake; to surpass; to transcend; to pass; to cross; ultra-; super-

核

hé variant of 核[he2]; to investigate

hé pit; stone; nucleus; nuclear; to examine; to check; to verify

搜

sōu to search

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