The pollution of the forest has seriously affected plant life and, to a lesser extent , wildlife.

森林污染严重影响了植物的生存，其次也对野生动物造成了影响。

《牛津词典》

OK, I know this is true with VC also, but to a lesser extent.

我知道VC也是这样子，但程度不一样。

youdao

You will still need to focus on them somewhat, but to a lesser extent.

你仍然需要些须地精力关注它，但那已经很少了。

youdao

Decreases in barometric pressure two to three days before the visit also appeared to trigger headaches, but to a lesser extent.

VOA: special.2009.03.18

But most have been reported in Mexico and, to a much lesser extent,the United States.

VOA: special.2009.05.06

The United Nations says nearly 60 percent of Afghanistan is insecure to a greater or lesser extent, and access in these areas is limited and risky.

VOA: standard.2009.08.07

This federal agency has long focused on funding--and to a lesser extent conducting--basic research.

FORBES: Commentary

Hurricane Sandy appears to have lowered construction (and sales, to a lesser extent) in the Northeast.

FORBES: Halfway Home: Housing Market 51% Back To "Normal"

Figure 2 makes that clear, and so, to a lesser extent, does Figure 3.

FORBES: Market Won't Get 2008-Ugly