同根派生 approach path相关词英汉例句PAPI Precision Approach Path Indicator 精密进近航道指示器Helicopter Approach Path Indicator 直升机接近路线指示器Horizontal Approach Path Indicator 水平进场航道指示器Horizontal Approach Path Indicators 水平进场航道指示器Precision Approach Path Indicator 精确进场航路指示器approach path更多例句