arboreal

adj. 树木的

aqueduct, aqueous, aquifer, aquiline, Arab, arabesque, Arabia, Arabian, Arabic, arabic numerals (also arabic figures), Arabist, arable, arachnid, arbiter, arbitrarily, arbitrariness, arbitrary, arbitrate, arbitration, arbitrator, arboretum, arbour (US arbor), arc, arc lamp, arc light, arc welding, arcade, arcane, arch, arch-, arch-enemy, archaeological, archaeologist, archaeology, archaic, archaism, archangel, archbishop, archbishopric, archdeacon,