很高兴可以为你解答问题.
1.一个不努力的人一生将一事无成.
Anyone who doesn't -work-- --hard--- will -not---- --success--- in life.
2.学会明辨对错是非常重要的.
It's very important to learn to -distinguish- --right--- --and--- -wrong----.
3.他们将给受灾最严重的地区发放人道主义援助.
They are going to send humanitarian --aid--- to the areas which were --hit--- --seriously--- -by----the disaster.
4.医生们就此药是否安全似乎尚未能达成一致意见.
Doctors -can---- --not--- --agree--- --on--- whether the medicine is safe or not.
5.如果我们无视保护环境的重要性,我们将付出惨重的代价.
If we --pay--- --no--- --attention--- the ---importance-- of the protection for the environment,we will have to pay too much.