飞行器可以通过向左或向右改变航线来避免相撞。

Aircraft can avoid each other by altering course to left or right.

《柯林斯英汉双解大词典》

在第一个路口向右拐，然后再在第二个路口向左拐。

Take the first right, then the second left.

《牛津词典》

我可以清楚地看到他将头向右转然后又向左转。

I could plainly see him turning his head to the right and left.

《柯林斯英汉双解大词典》

When I see birches bend to left and right Across the lines of straighter darker trees, I like to think some boy's been swinging them.

当我看到白桦树弯下身子，向左，也向右,穿过排列成行的挺直黑黑的树，我总以为有个孩子把白杨“荡“弯了。

耶鲁公开课 - 现代诗歌课程节选

In just a moment the hearts are gonna start flowing from bottom to top and the cookies are gonna start moving left and right and they seem to be somewhat synchronized with the music, perhaps based on trial and error by the student who implemented this one.

刚刚那一刻，那些爱心们从底部上浮到顶部,饼干人则向左向右移动,它们似乎都随着音乐的律动而变化着，也许这是那个制作该动画的同学,不断尝试的结果。

哈佛公开课 - 计算机科学课程节选

Just looking at this first line: "When I see birches bend to left and right."

看第一句：,当我看到白桦树弯下身子，向左，也向右“

耶鲁公开课 - 现代诗歌课程节选