深入

shēn rù to penetrate deeply; thorough

探索

tàn suǒ to explore; to probe

app 用

yòng to use; to employ; to have to; to eat or drink; expense or outlay; usefulness; hence; therefore

企

qǐ to plan a project; to stand on tiptoe; Taiwan pr. [qi4]; abbr. for 企業|企业[qi3 ye4]

TG:@sign2botpes