发生这种情况时，请不必惊慌。

When that happens, don’t panic.

youdao

罗伊：好的，我希望下次发生这种情况时我能在你身边。

Roy: Well，I hope I'm around next time it happens.

youdao

当发生这种情况时，三角测量法允许系统精确定位原闪光。

When that happens, triangulation allows the system to locate the original bolt with precision.

youdao

And, as you see, the baby screams when this happens.

正如你所看到的,当这种情况发生时,婴儿会发出尖叫

耶鲁公开课 - 心理学导论课程节选

Hybridization simply means that DNA will re-nature and form a stable double helix only with its particular match, only with the hybrid that it is perfectly complementary, too.

核酸分子杂交表示,DNA在变性状态下可以恢复活性,和与其配对的单链形成稳定的双螺旋结构,只有在完全配对时才会发生这种情况

耶鲁公开课 - 生物医学工程探索课程节选