亨利克先生属于爱留胡子一类的家伙，但他的习惯是冬季蓄起胡子，到了春季又刮光。

Mr. Henrich liked to grow out his mustache and beard during the winter and shave it off later in the spring.

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它们对 C 类紫外光中也有很强的吸收能力，这表明它们最初可能是天线色素。

They also absorb strongly in the UV-C, suggests that they might have originally acted as antenna pigments.

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脉冲激光器是另一类的激光器，它的脉冲是在“开”与“关”两种状态的振荡之间产生。 当激光器处于“开”的状态，产生光，在“关”的状态，光量显著减少。

There is another class of lasers, however, that pulse, oscillating between an "on" stage, where light is produced, and an "off" stage, when the amount of light is dramatically reduced.

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