Of all of them, canola is probably the least harmful because machines that use it don't produce as much carbon monoxide.
在所有这些蔬菜中,油菜籽可能是危害最小的,因为使用它的机器不会产生那么多的一氧化碳。
In January of last year the Moviemania chain of movie theaters started propping its popcorn in canola oil, instead of the less healthful coconut oil that it had been using until then.