They contain nothing but speakers each set on a foam mounted speaker baffle. 它們僅僅包含揚聲器，每組都安裝在墊有泡沫的揚聲器反射板上。
What he saw was blue waves flecked with foam, and paler blue sky, both spreading without a break to the horizon. 無奈他只能看見帶著點點泡沫的藍色海浪和灰藍色的天空，海浪和天空不間斷地延伸到地平線的盡頭。
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