组合
Pool \Pool\, v. t. [imp. & p. p. {Pooled}; p. pr. & vb. n. {Pooling}.] To put together; to contribute to a common fund, on the basis of a mutual division of profits or losses; to make a common interest of; as, the companies pooled their traffic. Finally, it favors the poolingof all issues. --U. S. Grant.