navigation
/ˌnævɪˈgeɪʃn; ˌnævə`ɡeʃən/ n[U]
1 action of navigating 航海; 航空; 驾驶.
2 art or science of navigating 航行学; 航海术; 航空术
an expert in navigation 航行学专家.
3 movement of ships over water or aircraft through the air 航行
There has been an increase in navigation through the canal, ie More ships use it. 通过该运河的船只已经增加了.