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600？
引用：
2024-03-12 09:24
I bought a cow for $900
I sold it for $1200
I bought it again for $1300
I sold it again for $1600
How much did I earn?
$上证指数(SH000001)$ $创业板指(SZ399006)$ $纳斯达克100指数(.NDX)$