arsenic

n.砒霜

arrears, arrest, arresting, arrhythmic, arrival, arrive, arrive at, arrive in (at), arrogance, arrogant, arrogantly, arrogate, arrow, arrowhead, arrowroot, arroyo, arse, arse-hole (US ass-hole), arse-licker, arsenal, arson, arsonist, art, art-form, artefact (also artifact), arterial, arteriosclerosis, artery, artesian well, artful, artfully, artfulness, arthritic, arthritis, artichoke, article, article of faith, articulate, articulated, articulately,