The duration of previous geologic periods was difficult to determine.
以前很难确定地质期的持续时间。
With such a long interval, it is difficult to determine the age of this fossil.
时间隔得这么久了，很难确定这化石的年代。
Difficult to determine information completeness.
难以确定信息的完整性。
The significance of this is difficult to determine.
的意义，这是难以确定。
Third, the initial value is difficult to determine.
第三是平滑初始值很难确定。
Quality is sometimes difficult to determine immediately.
质量有时难以马上确定。
This narrow range of blank-holder force is difficult to determine.
合适的压边力范围是很难决定的。
The death toll in Libya has proved particularly difficult to determine.
利比亚的死亡人数尤其难以确定。
A precise definition of poverty is actually very difficult to determine.
对贫困的精确定义实际上是很难的。
It is often difficult to determine the meaning of a word without a context.
脱离上下文很难确定一个词的意思。
It wasn't difficult to determine the Best Selling American Artist this year.
要确认今年的最佳销量美国艺人一点儿也不困难。
But it is difficult to determine what gentile name was borne by married women.
但是，确定已婚妇女的血族名称却成了一种困难。
It is very difficult to determine the cause of a problem that only occurs sometimes.
只有偶尔会发生的问题是很难确定问题的起因的。
It's not difficult to determine that these two crashes have the same root cause.
不难判断这两个崩溃的原因是相同的。
It is difficult to determine from an interview whether someone is type a or not.
面试很难区分出某个人到底属于A类还是B类。
By contrast, the process of personal growth is much more difficult to determine.
相比之下，个人的成长过程要难以决定得多。
Consequently, an accurate tally of service trade export is difficult to determine.
结果是，服务(劳务)出口贸易很难准确计价。
It is difficult to determine actual time allotment for individual teaching session.
对于每次授课的时间分配上是很难决定的。
Too many asserts can make it difficult to determine exactly which assert caused the error.
太多的断言会使我们很难判断错误是由哪个断言引起的。
The cause might be difficult to determine due to the randomness inherent to the problem.
由于问题固有的随机性，原因可能很难确定。
Whether an organism is a plant or animal is difficult to determine by simple approaches.
一种有机体是植物还是动物，很难用简单方法来确定。
The municipal water supply networks, is very difficult to determine the line of a curve.
而在市政供水管网中，则很难得到一条确定的管路特性曲线。
Because these rules are unspoken, it may be difficult to determine exactly what they are.
因为这些规则是不言而喻的，但可能难以确定正是他们。
Stage is difficult to determine until eschar has sloughed or has been surgically removed.
在焦痂脱落或手术去除前难以确定其分期。
It can be difficult to determine where and when performance problems and bottlenecks occur.
很难确定何处、何时会出现性能问题和瓶颈。
It can be difficult to determine because, after all, you may not be inside the mind if the writer.
这很难决定，因为你毕竟不知道作者内心的想法。
Because of this conflict, it can be very difficult to determine who was responsible for the injury.
因为这一冲突，它可以很难确定谁应对损害负责。
Because of this conflict, it can be very difficult to determine who was responsible for the injury.
因为这一冲突，它可以很难确定谁应对损害负责。
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