短语讲解：

1. But for now, Wall Street watchers expect extreme ups and downs.

but for 要不是
例句：But for music, life would be dull.
要不是音乐，人生会很无聊。
ups and downs 起伏; 盛衰，沉浮
例句：The company has undergone many ups and downs.
这家公司历经盛衰浮沉。

2. What you may see is choppy trade with 200- to 300-point swings in the Dow, and 40 in the S&P 500 … for at least the next couple months.

at least 至少
例句：In fact it requires at least n generators.
事实上，它至少要有n个元素。

3. Consumer spending is a key factor to watch as the fourth-quarter earnings season comes to a close, said market analyst Lindsey Bell.

come to a close 渐近结束，临终
例句：The term has come to a close
学期已结束。

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