Spray shirts prone to sweat stains with lemon juice before washing. The natural acid dissolves alkaline sweat reside that could cause yellow discoloration.
在容易发霉的衣服上喷点柠檬汁再洗。天然的酸会溶解掉汗里面让衣服变黄的碱性成分。
2
A fresh supply of yellow froth (probably the same type of elemental sulfur found in the "cool acid-brine" crater lake at Kawa Ijen) is brought up by the plume and pushed out toward the crater wall.