分庭抗礼
As one's rival.
Keep at arm's length.
At loggerheads with.

eg：This product shares the market with that one as its rival.

中英俚语俗语来源：庄子·渔父：“万乘之主，千乘之君，未尝不分庭优礼。”

同义词：大相径庭 At odds with.