和老师讨论后，我终于明白了这个问题。

I finally ___understood the problem after discussing it with my teacher.

我把他的点头理解为同意。

I ___understand his nod as a sign of agreement.

经历过失去亲人的痛苦后，她更能理解别人的悲伤。

After experiencing the pain of losing a loved one, she could better ___understand others' grief.

当我听到她说'太忙了'，我理解为她不想参加聚会。

When she said 'too busy,' I ___understood it as her not wanting to join the party.

你必须明白这一点：迟到的员工将受到处罚。

___Understand this: late employees will face penalties.