The reflex, to restrict and ban, has worked (albeit far from perfectly) for more traditional sorts of biological weapons.

为了限制、禁止这一不良后果（尽管不禁完美），对于很多传统生物武器来说依然奏效。

youdao

It is almost impossible to pass federal laws to restrict access to the most powerful semi-automatic weapons.

通过联邦法律来限制威力最强的的半自动武器的获取途径几乎是不可能的。

youdao

Mr Emanuel - who was President Barack Obama's chief of staff as well as a key member of President Bill Clinton's White House when a ban on assault weapons was introduced in 1996 - wants to restrict sales of weapons he says were meant for the "battlefield".

BBC: Magazine

The assault weapons ban would restrict what gun manufacturers call modern sporting rifles.

FORBES: Obama's Gun-Control Laws Would Limit, Not Destroy $32B Firearm Industry

And that means passing serious laws that restrict the access and availability of assault weapons and magazine clips that aren't necessary for hunters and sportsmen and those responsible gun owners who are out there.

WHITEHOUSE: The President and Vice President Discuss Reducing Gun Violence with Law Enforcement Officials | The White House