柑橘, 柑橘树 a tree of a genus that includes the lemon, lime, orange, and grapefruit, cultivated for its fruit. 示例: • The orchard is filled with various citrus trees. 果园里种满了各种柑橘树。 • She planted a new citrus in her backyard. 她在后院种了一棵新的柑橘树。