Qhov cub, raws li qhov tsis tseem ceeb thiab cov khoom siv tseem ceeb hauv kev lag luam niaj hnub, plays lub luag haujlwm niaj hnub hauv ntau kev lag luam .
Los ntawm kev pom kev lag luam, qhov cub yog qhov tseem ceeb ntawm cov khoom noj muaj kev nyab xeeb thiab kub thiab txias thiab kub thiab txias thiab kub thiab txias ya raws thiab txuas lub txee lub neej yam tsis muaj kev puas tsuaj lawv cov as-ham {2}
Hauv kev lag luam tshuaj, qhov cub kuj muaj qhov tseem ceeb {{} Cov khoom siv hluav taws xob ntau dua thiab cov huab cua sib txawv, tom qab kho tau hauv qhov cub, Kev ua tau zoo tau txhim kho, uas tuaj yeem ua tau zoo dua ua lag luam thov {}}
Hauv kev tsim cov khoom siv hluav taws xob, qhov cub yog qhov tseem ceeb ntawm cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob tsis muaj zog, thiab cov khoom siv hluav taws xob muaj zog rau lawv cov khoom ruaj khov thiab txhim khu kev ua haujlwm ....
Ntxiv rau cov kev lag luam saum toj no, ncu tseem muaj cov tshuaj muaj kev lag luam, ncu siv los ua kom muaj kev nyab xeeb thiab muaj kev nyab xeeb; Hauv kev lag luam textile, ncu yog siv los ua kom qhuav thiab cov duab thiab cov ntaub ua kom zoo dua qub {{1}
Nrog kev nce qib nruam ntawm science thiab thev naus laus zis, uas muaj peev xwm txhim kho cov khoom siv kub tsis tu ncua thiab sijhawm, thiab txhim kho cov khoom siv hluav taws xob tsis tu ncua thiab sijhawm, thiab txhim kho cov khoom siv hluav taws xob tsis tu ncua thiab lub sijhawm