cinder

余烬、火星

The fire had burned down to a few glowing cinders.

火已经烧到只剩几点发红的余烬。

煤渣、炉渣常用复数

The garden path was covered with cinders from the old stove.

花园小径上铺满了旧炉子留下的煤渣。

烧成焦炭、烧得焦黑口语

I forgot the bread in the oven and it burned to a cinder.

我忘了烤箱里的面包，结果烤成焦炭了。