Kao 说她曾警告，不要根据任何一项研究得出任何一般化的结论，还提出需要进一步研究和解释这些学生的背景特征。
Kao said she cautions against forming any generalizations based on any one of the studies, noting that more background characteristics of the students need to be studied and explained.
当圣奥古斯丁承认他无法定义时间时，他强调了时间最显著的特征之一：时间只有在特定的背景下才有意义。
When St. Augustine admitted his inability to define time, he highlighted one of time's most noticeable qualities: Time becomes meaningful only in a defined context.
这张高清图片展现了这个星系壮观的的恒星与星尘盘的正面特征，背景上还有这一些星系，有些还能透过 M101 看到。
The sharp image shows stunning features in the galaxy's face-on disk of stars and dust along with background galaxies, some visible right through M101 itself.
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