一电火花打点计时器固定在斜面上某处,一小车拖着穿过打点计时器的纸带从斜面上滑下如图甲所示.
— Sorry, I don't have ____ to lend to you.
— ____. I am going to ask others for help.
形近字组词
秋____ 伴____
编____ 偏____