惯用伎俩 meaning in English

customary tactics
old tricks

I use that all the time . - oh , okay . does it work
这是我的惯用伎俩-哦，有用吗？
- i use that all the time . - oh , okay . does it work
-这是我的惯用伎俩-哦，有用吗？
Influenced by the unsymmetrical information , the investors are hard to learn the earnings management of listed companies . however , the investors can still see through listed companies " tricks to protect themselves to the greatest extent by means of analyzing the financial statement as well as paying attention to choices of accounting principles , alternation of accounting estimation , assets impairment provision , related parties transaction , reconstruction and adjustment in operation
虽然上市公司所进行的盈余管理活动会受到信息不对称性的影响，难以为投资者所明晰，但投资者还是可以通过分析其财务报告，关注会计政策的选择和会计估计的变更，关注资产减值准备，关注关联交易和资产重组，关注对企业生产经营活动的调整等，来识别上市公司的惯用伎俩，以最大程度保障自身的利益。