n.
traveling across
a shallow area in a stream that can be forded
同义词：ford
a point where two lines (paths or arcs etc.) intersect
a junction where one street or road crosses another
同义词：intersectioncrossroadcrosswaycarrefour
a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other
同义词：crosswalkcrossover
(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
同义词：hybridizationhybridisationcrossbreedingcrossinterbreedinghybridizing
a voyage across a body of water (usually across the Atlantic Ocean)
