synoptic system track的用法和樣例：
例句
- The system path variable must include this path.
系統路徑變量必須包括此路徑。 - This can be inconvenient when developing, since the libraries are not yet ready to be installed, and cluttering system paths may be undesirable.
這在開(kāi)發(fā)的時(shí)候會(huì )不太方便，因為這些庫還沒(méi)有準備好被安裝，而且把系統路徑搞亂也是不受歡迎的。
