笔直
perfectly straightstraight as a ramrodbolt upright
比试, 匕首, 笔顺, 鄙俗, 笔算, 笔谈, 笔套, 笔挺, 笔筒, 笔头, 笔误, 笔下, 笔心, 彼一时/此一时, 笔译, 比翼, 比喻, 笔战, 比照, 笔者, 比重, 秕子, 毙, 臂, 薜, 避, 璧, 跸, 襞, 畀, 毖, 狴, 庳, 萆, 蓖, 荜, 嬖, 筚, 髀, 比,