他無力負擔療養院費用，只能留在工廠宿舍休養，以泡麵果腹；為了保住工作，即使右腳仍麻木刺痛、無法久站，半年就後重返工作崗位。
Some smoke alarms have been designed to be ultra-sensitive. Aspirating devices, for example, constantly suck in air in order to detect even small quantities of smoke in a room. They are often used in commercial settings, including server rooms packed with expensive computer tech.
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block: Writes wait until buffer space is available. Use when you trust the producer to await writes properly.
When shoes slide across a floor, wave-like deformations of the sole can generate squeaking. The pitch of the squeak depends on the rate at which deformations are generated.