0 Hi, 02br 00Think of it this way. 02br 00Hygienic = very, very clean 02br 00Sterile = completely clean, free from bacteria 02br 02br 00We also use sterile in the sense of being devoid of life: 02br 00The planet's surface was sterile. 02br 00The man is unable to father a child, because he is sterile.
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