Well, for one thing, he's my sister's boyfriend. Ann talks about Jack all the time.
首先,他是我妹妹的男朋友。安整天就是杰克长杰克短的。
If we had been more careful, we would be getting much better results now.
如果我们更为细心的话,成绩会更好。
It soon became clear that the straight part of the dance changed when the sun's position changed. If the feeding place was toward the sun, the dancer headed straight upward during the straight part of the wagging dance.