like: acid → →
fire-damp, carbonic acid (gas) ☊ 
thán khí ☊ poor/dry/acid/sandy/fertile, etc. soil ☊ soil ☊
It is treated with acid before being analysed. ☊ with ☊
acide ☊ j’ai dissous le sang à l’acide ☊
acid ☊ a cít ☊ acid ☊ a xít ☊ acid ☊ acít ☊ acid ☊ cường tan ☊ 
acid placid placidly acidic acid + 
: 酸 a. 尖刻的 酸 ☊ → 酸的 ☊ → 酸性的 ☊ → 
acid 
acide ☊ acid 
chua acid axit acid 
酸 acid 
Säure 酸的 acid sauer acid + + + + + + + acid + A sour substance. ☊ (n.) [acid] water-soluble compound with sour taste fire-damp, carbonic acid (gas) ☊ thán khí ☊