这幅照片中的浮油有些难以辨认，这是因为拍摄的角度和光照条件不理想，而不是因为浮油开始消散了。
The slick is somewhat harder to make out in this shot, but this is because of the viewing angle and light conditions, not because the oil slick is dispersing.
使用一个DSPI来访问多个分区不太理想的话，从SQL性能的角度来说可能非常棘手。
The less-than-ideal scenario of using a DPSI to access multiple partitions can be very painful from a SQL performance perspective.
从月球的角度，地球是一个理想的校准相机的参照点。
From the Moon, Earth is an ideal reference point to calibrate the cameras.
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