A gracious, yet firm demeanor will suit you well, as fair treatment will become the golden rule.
亲切但是严格的态度会比较适合你，因为公平对待将会变成黄金法则。
This rubber, mixed with sulphur and then exposed to intense heat, was flexible in cold yet firm in heat.
这块橡胶混合了硫磺，经过高温处理后，在受冷时会变软，受热时能变硬。
This rubber, mixed with sulphur and then exposed to intense heat, was flexible in cold yet firm in heat.
这块橡胶混合了硫磺，经过高温处理后，在受冷时会变软，受热时能变硬。
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