因此在一定背景下来评估如今黑白画像的重要性和广泛开发程度，显然，这门艺术并没被遗弃，反而经受住了时间考验。
So when put into context, appreciating the continued importance and wide scale exploitation of black and white portraiture today, it's clear that the art is not lost and has survived the test of time.
他们有时简直要闹到颠倒是非、混淆黑白的程度。
At times they go so far as to confound right and wrong and turn things upside down.
虽然只是黑白照片，但是却非常鲜明锐利，将黑白照片拍摄到如此程度是相当不容易的。
The photo presented below, although in black and white, is both extremely sharp and clear. To achieve such level of clarity in black and white is extremely hard.
机械设备办理程度地黑白，将直接影响公路施工地经济效益。
The economical profit of the highway construction is depends on whether the mechanical equipment is good or bad.
机械设备办理程度地黑白，将直接影响公路施工地经济效益。
The economical profit of the highway construction is depends on whether the mechanical equipment is good or bad.
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