115 It is through the use of logic and of precise, careful measurement that we become aware of our progress.
115 It is through the use of logic and of precise, careful measurement that we become aware of our progress.
通过逻辑思维和精确的测量手段才能获知我们的进步。
115 It is through the use of logic and of precise, careful measurement that we become aware of our progress.
通过逻辑思维和精确的测量手段才能获知我们的进步。