我能看到的只有一条参差不齐的长线条，其中还有一些高的凸起。
All I could make out was a long, jagged line with some high plateaus.
但是，橡树的叶子少而又大，反射力较强，会产生参差不齐的声波，或所谓的“粗糙回声”。
But an oak which has fewer but bigger leaves with stronger reflections, produces a jagged wave form, or what we called a rough echo.
该计划能够包容这种参差不齐的进展。
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