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Electric golf cart batteries are one type of relatively inexpensive deep-cycle battery that is often used for energy storage in smaller PV systems.

电动高尔夫球车使用的蓄电池是一种比较便宜的深循环蓄电池，通常应用于小型光伏系统中储存能量。

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For the duration of its cycle, though, this deep-sea carbon is locked away.

然而在整个周期里，深海里的碳是被锁藏的。

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They happen because management ignores deep-seated weaknesses and allows itself to get caught up in a cycle of short-term initiatives meant to meet high expectations with high-risk growth.

FORBES: The Only Way to Long-Term Corporate Growth

Given all the discoveries that we have made from an up-close investigation of these ocean ridges, we can't help but wonder what we might find at the far end of the same plate tectonic cycle where seafloor is drawn back into the Earth's interior at deep-ocean trenches.

CNN: Probing the ocean's undiscovered depths