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重点讲解：
1. tend to do sth. 往往会；经常就；
It tends to get very cold here in the winter.
这里冬天往往会很冷。
2. relate to 涉及；关于；
Other recommendations relate to the details of how such data is stored.
其他建议涉及此类信息储存方面的一些细节。
3. even if 即使；尽管；纵然；
I'll never lose heart even if I should fail ten times.
即使失败10次，我也不灰心。
4. except for 除了；除…之外；唯有；
Except for her illnesses, she had had a particularly happy childhood.
除了体弱多病外，她的童年特别幸福。
n. 身份，一致，特征
