GCF的造句（例句）：
1、GCF has a total of seven methods for creating a connection.
GCF共有七种创建连接的方法。
2、GCF is exceptionally flexible in its support for different connection protocols.
GCF在支持不同的连接协议方面特别灵活。
3、Figure 1 shows the GCF class hierarchy.
图1显示了GCF的类层次结构。
4、EA activity of GCF sample can be influenced by the category of buffer and the storage temperature.
GCF样本的保存过程中，缓冲液的种类以及保存温度可影响GCF -EA的活性。
