know by

• 以 ... 方式熟悉； 在 ... 方面了解

词汇搭配

• know a man by his company 从其交友知其为人...
• know all men by these presents 为布告事
• know someone by sight 认得某人,跟某人面熟...
• know something by heart 谙记
• know someone by name 仅知其名(未见其人)...
• know someone by his company 了解某人所交的朋友就...