送他一把安全剃刀作为生日礼物。
经过了几年的试验，使用抛弃型刀片的安全剃刀问世了。
A few years of metallurgy experimentation later, the disposable-blade safety razor was born.
他信奉简朴，甚至于只用一把安全剃刀和清水刮胡子。
He believed in simplicity, so much so that he used only a safety razor and water to shave.
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