However, the lack of deep study in this regard may be said that fiscal incomestudy is still superficial.
然而，如果缺少这方面的深入研究，对财政收入的研究可以说仍停留在表象上。
2
A 2003 study found that rickshaw pullers are near the bottom of Kolkata occupations in income, doing better than only the beggars.
2003年的一项研究发现，人力车夫的收入接近加尔各答的最底层，只比乞丐做得更好。
3
Whereas some of the low self-control study members are more likely to be single parents with a very low income and the parent is in poor health and likely to be a heavy substance abuser.