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1·In some cultures friendship means a strong lifr-long bond between two people.

有一些文化里，友谊意即两人之间一种强烈的，一世之久的感情。

2·Objective:To study the expression of Leukemia inhibitory factor receptor (LIFR) in human salivary gland adenoid cystic carcinoma cell lines with different metastatic potential.

目的：探讨白血病抑制因子受体（LIFR）与人涎腺腺样囊性癌转移的相关性。