Drugs are designed so that small changes in acidity alter their bioavailability, helping to route them to the bodily tissues where they are needed.
这些药品的特性被设计为根据酸度的微小变化更改自身的生物药效率，以使它们作用于人体的特定组织。
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TransCanada this week signalled its willingness to alter the pipeline's route, saying it will work with the Nebraska legislature to that end.
加拿大石油管道运输公司本周签署了同意更换运输路线的协议，表示会和内布拉斯加州的执法机构合作到底。
3
Alter your route indiscriminately or attempt to take any overgrown short cuts. You may find yourself getting lost or stranded in a place where you can neither retreat nor proceed.