自行: voluntary, autonomous, by oneself, self-...
壳: shell, carapace, crust (earth's crust etc), also pr....
沐浴露: shower gel...
锅: pot, pan, boiler...
上火: to get angry, to suffer from excessive internal heat (TCM)...
早晚: morning and evening, sooner or later...
视线: line of sight...
莫名其妙: (idiom) baffling, inexplicable...
路过: to pass by or through...
比重: proportion, specific gravity...
