Determining the hemisphere is easy: latitude zones a, C, d, e, F, g, h, J, K, l, and m are in the Southern hemisphere, and the rest are in the Northern hemisphere.
这种确定非常简单：纬度区a、C、D、E、F、G、H、J、K、L和m位于南半球，而其余区位于北半球。
2
If you'll only take the trouble just to S-M-I-L-E.
如果你只不过将麻烦正好化作微笑。
3
For a stationary, adiabatic flow the specific energy E, specific angular momentum L and mass accretion rate M are constant in space.