blue chalk

基本解释

We used blue chalk for photo clarity, but make sure that whatever color you use wipes off easily.
我們用藍色粉筆照片的清晰度，但要確保無論您使用抹佈顔色容易脫落。
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Your first suit should be either navy blue or gray, possibly with a light chalk stripe (like a pinstripe, but softer), and in an all-season, medium weight.
你的第一套該選海軍藍或者灰色，可能帶著淺白色條紋那種（像細條紋，不過更柔和），四季皆宜，重量適中。
Non-toxic items that babies tend to put in their mouths and potentially swallow include crayons, pencils, chalk, water-based glues and paints, Blue tack, sun-tan lotions, bath oils and lipstick.
嬰兒往往會將無毒性物品放入嘴裡竝可能吞食，這些物品包括：蠟筆，鉛筆，粉筆，水性膠水和顔料，萬能膠，防曬乳液，浴油和脣膏。