研究者可能已经发现至少一条原因来支持它。
And researchers may have discovered at least one reason why.
如今，研究者们已经发现了绳子如何会打结背后的秘密。
Now researchers have unraveled the mystery behind how such knots form.
虽然研究者们已经发现了很多相关的发病因素，但其发病机制仍不清楚。
The fundamental cause is unknown, though a number of predisposing conditions are recognized.
虽然研究者们已经发现了很多相关的发病因素，但其发病机制仍不清楚。
The fundamental cause is unknown, though a number of predisposing conditions are recognized.
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