leery

She was leery of the new investment scheme because it promised unusually high returns.

她对这项新的投资计划心存疑虑，因为它承诺了异常高的回报。

The dog growled at the stranger, looking leery and ready to defend its owner.

那条狗对陌生人咆哮，神情警惕，随时准备保护主人。

I'm leery about buying a used car without a mechanic's inspection.

我对没有经过机械师检查就买二手车这件事持怀疑态度。