、。
And there's one more way to climb up onto the deck of this slide.
Literal
And, this playground-equipment [target-には] slide [genitive-の] deck [target-に] climb-up method [subject-が] one-more exists [polite-ます].
A descriptive sentence typical of product descriptions or children's playground reviews. The そして ('and, and then') opens the sentence as a continuation. 方法 ('method, way') is modified by the preceding clause 滑り台のデッキに上がる ('to climb up to the slide's deck'), a dictionary-form modifying a noun — typical of Japanese relative clauses for 'way/method.'