usefully

ADV อย่าง เป็นประโยชน์  favorably profitably yang-pen-pra-yod

USEFULLY

adv. In such a manner as to produce or advance some end; as instruments or time usefully employed.

USEFULLY

USEFULLY Use "ful *ly, adv.

usefully

ú se ful ly 副詞 役立つように, 有効に, 有益に .