The days were really long, mild side there is a rich, and rich accumulation is plain true.
只要日子过得实在，平淡中就有丰富的一面，而丰富就是平淡积聚的真实。
2
Braid delta systems mainly consist of braid river deposits in delta plain facies, rapid accumulation deposits, slump deposits and turbidites in delta front and prodelta facies.
The most favourable depositional environment for coal accumulation is the seashore plain formed by regression and the delta plain formed by the entering of rivers into the shallow bay.