He had to be acquainted with meteorology and know enough fluid dynamics to make sure he didn't overload his ship with booty.
也应该熟悉气象学，懂得足够多的流体动力学知识，保证自己的船没有因战利品超载。
A good pirate captain had to know the astronomy to navigate by the stars. He had to be acquainted with meteorology and know enough fluid dynamics to make sure he didn't overload his ship with booty.
一名优秀的海盗船长必须了解天文学，通过星相来导航，还必须熟知气象学，对流体动力学也要十分了解，这样他才不会给船上装载过量的战利品。
When the mosquito takes a blood meal, it has to get rid of fluid and salt so it doesn't overload-and die.
当这些蚊子享受血液大餐时，为了不被撑死，它们必须将其中的液体和盐分排出体外。
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