the INTERNET DOMAIN NAME for Burkina Faso 布基纳法索
The initial flight of BF-1 will not, however, involve any operations in STOVL mode.
然而，BF - 1的首次飞行测试将不包括任何STOVL模式操作。
A simple and mild method for the synthesis of fluorenol was studied and 9 bromofluorene (9 BF) can be selectively obtained.
研究了一种简单而温和的合成芴醇的方法，可以选择性地获得9溴芴（9 BF）。
When my BF and I moved from Seattle, I packed them up and kept them on my desk until just a few days ago.
当我和我男朋友搬离西雅图时，我把它们包在一起，放在我的桌面上，直到几天前才打开。
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