Katydids were lamenting fall's approach.是什么意思？

Katydids were lamenting fall's approach.

蝈蝈儿正为秋天临近而哀鸣.

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

lamenting

adj. 悲伤的，悲哀的；v. （为…）哀悼，痛哭，悲伤( lament的现在分词 )；

例句
She could feel her soul crying out in her, lamenting desolately.
她感到自己的灵魂在内心呼唤, 悲伤哀切.

approach

vt.& vi. 接近，走近，靠近；vt. 接近，着手处理，使移近，试图贿赂（或影响，疏通）；n. 方法，途径，接近；vi. 靠近；

例句
'Did they approach you?' – 'No, absolutely not.'
“他们找过你了吗？”——“没有，绝对没有。”