I do not know the answer to a question
私はその質問の答えを知りません (watashi wa shitsumon no kotae o shirimasen)
"I don't know what time the movie starts. Your guess is as good as mine."
"映画がいつ始まるかわかりません。あなたの推測も私と同じです。" (eiga ga itsu hajimaru ka wakarimasen anata no suisoku mo watashi to onaji desu)
to sacrifice for the benefit of others
an unidentified but informed source
a lazy person
showing maturity or wisdom greater than expected for one’s a...
to start an argument intentionally
To refuse to answer a question, often in legal contexts, to...