plain stitch
平针, 平针线圈
例句与用法：
It's all plain sailing.
这事非常简单。
Once the design problems were solved, it was all/everything was plain sailing.
设计问题一经解决，就容易办了。
It is sheer fantasy to imagine that the cause of socialism is all plain sailing.
认为社会主义事业总是一帆风顺，这种想法只是幻想。