旁通的英文：
by-pass
bypath
pass-by

参考例句：

Coronary artery bypass graft.
冠状动脉旁通接合

The latter may be used with bypass or throttling valves in the tower water pipework circuit
近来，可采用在冷却塔的水管系统中设置旁通阀或节流阀。

pass是什么意思：
v. 通过；传递；及格；经过
n. 穿过，经过；通行证，护照，入场证

This coin will not pass.
这钱币不通用。

pass a messenger
传递引绳

The evening passed as evenings mostly pass at Italian theatres
那一声过得很平淡，象意大利戏院里的大多数夜晚一样

Jan has passed the ball to the teammate, a wonderful pass.
简把球传给了队友，传得可真漂亮。

You could pass for a teenager. The fake painting passed for an original.
你可冒充十几岁的人。这幅伪造的画被当作真品

bypath是什么意思：
n. 小路,侧道,私道

"Therefore, so far as his duties would permit, he trod in the shadowy bypaths, and thus kept himself simple and childlike;"
因此,只要他的职责允许,他就在浓荫密布的小径上漫步,借以保持他自己的纯真和稚气