陋见浅识lòu jiàn qiǎn shí
scratch the surface; understand very little (about sth.)
英语例句库
Alkyl indicant is a new non-ionic surface active agent.
烷基糖苷是一类新型的非离子表面活性剂。
The result indicates that the main metabolic product of petroleum hydrocarbon degradation is acetic acid and surface active agent of glycolipid composed of fatty acid and rhamnose.