adj. （船）牢牢搁浅的；必须遵守的；不可违逆的；固定的
hard and fast //
形容词 If you say that there are no hard and fast rules, or that there is no hard and fast information about something, you are indicating that there are no fixed or definite rules or facts. (规则)不容改变的; (信息)明确的
There are no hard and fast rules, but rather traditional guidelines as to who pays for what.
关于谁来支付什么费用并没有一定要遵守的规定，只有传统的准则。
牢牢搁浅的[亦作 hard and fast]
... hard and fast lines 绝对分明的和固定不变的界限 hard-and-fast 明确的 ; 不可违逆的 ; 明确易懂 ; 不可变更的 Launch hard and ramp fast 奋力推进 ...
... hard and fast lines 绝对分明的和固定不变的界限 hard-and-fast 明确的 ; 不可违逆的 ; 明确易懂 ; 不可变更的 Launch hard and ramp fast 奋力推进 ...
... carefully adv.仔细地；聚精会神地 hard-and-fast adj.（规则等）不可改变的 influence v.影响（influence），对……起作用 ...
... literary:文学的 hard-and-fast:明确的，不可违背的 authoritative:权威的 ...
"Literary" fiction has no hard-and-fast definition.
“文学”小说没有固定的定义。
There are no hard and fast rules about this.
这事没有什么硬性的规定。
You can't lay down hard and fast rules.
规则不能定得太死。
This is most certainly not a hard-and-fast rule, in general I've found it to be accurate.
There are no hard-and-fast rules that determine if an IaaS cloud will provide savings to your business.
Turner says it's very difficult to provide hard-and-fast earnings estimates for Northern Peru in these early days.