Perihelial
a. perihelion的變形
??? 情景例句
It's still raining. I want to play tennis.
仍然在下雨。我想打網球。
Good-bye, Mike.
再見，邁克。
The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia;
氣墊船在非洲、澳大利亞等交通不發達地區特別有用。