[00:08:00] 理解
[00:11:00] intelligible 可理解的
[00:15:00] evident 明白的 the happy couple's love for each other is evident
[00:23:00] explicit 明确的、清楚的 the new tax law is explicit/that type of certificate is tax exempt
[00:35:00] elusive 难懂的 the boy was annoyed by the elusive words while reading the story
[00:44:00] mysterious 神秘的，难以理解的
[00:50:00] ignorant无知的，不了解的 he who is ignorant of the situation can't really understand me
[00:59:00] ignorance 无知
[01:04:00] grasp 领会、理解 it is said you do not need to have a grasp of english language to test well
[01:17:00] comprehend 理解 i could not comprehend the instructions for operating the computer
[01:27:00] comprehensive 综合的、有理解力的 a comprehensive survey was used to determine public opinion