semestral

事件或发生的事，尤指具有重大意义的事。通常指历史、社会或个人生活中的里程碑。

To make something shorter in length or duration.

青春期是从青春期开始到成年期的发育阶段。

To make something more agile or quicker; to speed up.

To the (a + el).

To make something longer in length or duration.

The first appearance of light in the sky before sunrise; dawn.

预见未来的事件并提前做好准备。

The ancient past, especially the period before the Middle Ages.

To postpone; to defer to a later time.