being up to particular standard or level especially in being up to date in knowledge

being up to particular standard or level especially in being up to date in knowledge

a powerful doglike mammal of southern and eastern Africa that hunts in large packs; now rare in settled area

a powerful doglike mammal of southern and eastern Africa that hunts in large packs; now rare in settled area

a powerful doglike mammal of southern and eastern Africa that hunts in large packs; now rare in settled area

a powerful doglike mammal of southern and eastern Africa that hunts in large packs; now rare in settled area

a powerful doglike mammal of southern and eastern Africa that hunts in large packs; now rare in settled area

a powerful doglike mammal of southern and eastern Africa that hunts in large packs; now rare in settled area

a powerful doglike mammal of southern and eastern Africa that hunts in large packs; now rare in settled area

a branch of knowledge