專家的建議是我們該竭盡全力來禁止瀕危動物被殺 The expert's suggestion is that we should do what we can to prevent animals from being killed./ The expert's suggestion is that we should do all we can to prevent animals from being killed.The expert's suggestion is that we should do everything we can to keep animals from being killed.The expert's suggestion is that we should do all we can to stop animals from being killed.the expert suggests that we should try our best to prevent animals from being killed./ the expert suggests that we should do what we can to prevent animals from being killed./ the expert suggests that we should do everything we can to prevent animals from being killed./ the expert suggests that we should do all to prevent animals from being killed./ the expert suggests that we should try our best to stop animals from being killed./