fect

But as they soon discovered, disguises can sometimes be too per fect.

正象他们不久就发现的那样, 化装效果有时可能太完美无缺了.

《用法词典》

The ef fect of erosion varies with soil type and depth.

侵蚀的影响因土壤的类型和深度的不同而不同.

辞典例句