The idioms that trace back to the source are: trace back to the source of poverty, trace back to the source. 2. Pinyin is, S3yó u.3. The structure is, tracing (left and right structure) and swimming (left and right structure). 4. The phonetic notation is, ㄙㄨㄡ _.
What is the specific explanation of the upstream? We will introduce you through the following aspects:
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Down the river.
Second, the national language dictionary
Down the river. "The Book of Songs. Qin Feng. Jianjia: "If you swim back and follow it, you will get water like a donkey." Also called "back".
Third, the network interpretation
Go upstream, pronounce words, and go downstream.
Poetry about upstream travel
"Visit Yongji Temple and find traces for 30 years"
Poems about upstream travel
Looking back at Dai, revisiting 30 years of old books and tracing back.
About upstream travel
Traceability, traceability, traceability, traceability, traceability, traceability, traceability, traceability, traceability, traceability.
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