It may subsequently become a weak grower and a distinctly biennial cropper.是什么意思？

It may subsequently become a weak grower and a distinctly biennial cropper.

随后会引起树势衰弱,明显两年结一次果.

it

pron. 它，他，正好是所需的，事实[情况]；n. <美俚>傻瓜，笨蛋，<俚>绝妙的人，理想的东西，登峰造极；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

May

aux. 可以，也许，会，但愿；n. [May]五月，山楂属植物，（五朔节装饰用的）绿枝花枝，（春天开花的）绣线菊属植物；

例句
The way that American history is taught may change in order to accommodate some more of those cultures.
美国历史的授课方式可能会为了照顾到更多的文化而作改变。

subsequently

adv. 其后，随后，接着，“subsequent”的派生，嗣后，尔后；

例句
Facing total defeat in Vietnam, the French subsequently conceded full independence to Laos.
法国人在越南面临彻底的失败后，接着又让老挝取得了完全的独立。

become

vi. 变为，成为，变得，变成；vt. 适合，适宜，相称，相当，变成，发生；

例句
...abandoned buildings that become a breeding ground for crime.
沦为了犯罪温床的弃置楼群

weak

adj. 柔弱的，虚弱的，无力的，软弱的，不中用的，愚钝的，淡薄的；

例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

grower

n. 种植者，栽培者，以某种方式生长的植物；

例句
It may subsequently become a weak grower and a distinctly biennial cropper.
随后会引起树势衰弱,明显两年结一次果.

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

distinctly

adv. 明显地，无疑地，确实地，逼真；

例句
The spectacle of the former naval officers washing their dirty linen in public was distinctly embarrassing...
前海军官员们自揭伤疤的做法显然非常令人尴尬。

biennial

adj. （事件）两年一次的；n. 两年生植物；

例句
...the biennial Commonwealth conference.
两年一届的英联邦会议

cropper

n. 种植者，农作物，修剪机，割草机；

例句
He got a cropper yesterday while out riding.
他昨天出外骑马时跌了一跤.