如紫色花的亚洲牡丹和草莓番石榴等外来物种，威胁着如无刺玫瑰和树蕨等脆弱的夏威夷本土物种。
Invaders such as purple-flowered Asian melastome and strawberry guava threaten delicate Hawaiian natives such as thornless roses and tree ferns.
用树枝和树蕨做帐篷也是一件趣事。
Twining the branches and ferns together to make the shelter was almost fun.
四周有许多树蕨和枯树枝。
应用推荐