The dropdown menu says keyboard shortcut "Control + shift + space" should replay the audio slower (on a mac it is control + command + space)
The reason is that the Hebrew audios (as well as Esperanto and Irish) are real voice actor records, not a software generated voice, so they cannot slow down the audio qithout distorting it.
I cant really tell how the last word is pronounced, it just sounds so fast. There should be a slower audio option.
usually it would end in ים (if it is a musculine) and ות (if it is feminine), but unlike most languages in hebrew there is no "it" (for exemple room is musculine, floor is feminine, so חדר (room) in plural would be חדרים, and מרצפת (tile) would be מרצפות (though there is another translation to tile - אריח, and in this case the plural would be אריחים)). in cases of construct state, the musculine plural version would usually end wuth י (for exemple they are teenagers - הם בני עשרה) while the feminine would end with ות (they are teenagers - הן בנות עשרה)