1·Through doing this, the teacher will be able to ascertain the extent to which the child understands what he is reading.
通过这样做，老师将能确定这个孩子对他正在读的内容的理解程度。
—— 《柯林斯英汉双解大词典》
2·Cricket keeps an off-field umpire for boundary calls, and to ascertain whether batsmen are run out and if catches are real.
板球有一个场外的裁判来判定边界，并确定击球手是否出局，接球是否真实。
3·You test and measure your code to ascertain and quantify its quality, but the code itself has already been written.
您通过测试和度量代码来确定和量化代码的质量，但是代码本身都已经写好了。
4·Before attempting to write a test for the code in Listing 1 (and indirectly Listing 2), you might want to ascertain what exactly requires testing.
在企图为清单1(间接的是清单2)的代码编写测试之前，可能想确定实际需要测试什么。
5·"We are forming a committee to investigate these regrettable incidents in order to ascertain their cause so as to avoid them in the future" is weaselly corporate-speak, but it is grammatically active.
“我们正组织一个委员会来调查这些令人遗憾的事故，以便确定它们发生的原因，以避免它们今后再重复”是企业的推诿说法，但它在语法上是主动语气。
1·It can be difficult to ascertain the facts.
可能难以查明事实真相。
—— 《牛津词典》
2·Genetic sampling allows technicians to ascertain a fish's birth stream.
基因取样使技术人员得以查明一种鱼的出生河流。
3·The detective tried to ascertain the facts about the robbery.
侦探试图查明这起抢劫案的真相。
4·Mr. surveyor, please ascertain and verify the extent of the damage.
验船师先生，请查明并证实损坏的程度。
5·Can you ascertain who the owner is?
你能查明物主是谁吗？