cactus/ˈkæktəs; `kæktəs/ n(pl ~es or cacti/ ˈkktaɪ; `kæktaɪ/) any of various types of plants growing in hot dry regions, with thick fleshy stems and usu prickles, but no leaves 仙人掌. =>illus 见插图.
牛津英汉双解词典