The mechanism of these changes is incompletely understood.
对这些变化的机制尚不清楚。
Their view is very interesting, but I incompletely understood.
他们的说法很有意思，但我不完全明白。
Also, there is a wide range of incompletely understood phenomena in astronomy.
而且，在天文学中有一个广泛的不能完全理解的现象范围。
Also, there is a wide range of incompletely understood phenomena in astronomy.
而且，在天文学中有一个广泛的不能完全理解的现象范围。
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