Cov roj yam tseem ceeb yog cov tshuaj tua kab uas muaj peev xwm tswj tau cov kab tsuag ntawm cov qoob loo, yog li tiv thaiv cov qoob loo los ntawm kab tsuag.

Cov roj yam tseem ceeb tuaj yeem cuam tshuam kev loj hlob thiab kev loj hlob ntawm cov kab tsuag, yog li txo qis kev puas tsuaj ntawm kab tsuag rau cov qoob loo.

Tsis tas li ntawd, cov roj yam tseem ceeb tseem tuaj yeem cuam tshuam kev noj qab haus huv ntawm cov kab tsuag, yog li txo qis kev puas tsuaj ntawm kab tsuag rau cov qoob loo.

Tsis tas li ntawd, cov roj yam tseem ceeb tseem tuaj yeem cuam tshuam cov haujlwm ntawm cov kab tsuag, yog li txo qhov kev puas tsuaj ntawm kab tsuag rau cov qoob loo.

Hauv kev xaus, cov roj yam tseem ceeb yog cov tshuaj tua kab ua liaj ua teb zoo, uas tuaj yeem tswj cov kab tsuag ntawm cov qoob loo zoo, yog li tiv thaiv cov qoob loo ntawm cov kab tsuag.