an opportunity knocks only once.

i have an opportunity是什么意思? an opportunity knocks only once. an opportunity knocks only once. Waste an opportunity什么意思 afford an opportunity什么意思? knock knock knock knock knock knock have an opportunity什么意思谢拉 为什么是a unique opportunity 而不是an opportunity have an opportunity to do与have an opportunity doing的区别 Knock!Knock!Knock!歌词 have an opportunity to do sth造句要有翻译, 英语翻译:It's too good an opportunity to pass up