1·They are closely arranged on the stem alternately on distichous sides.
它们紧密地排列在茎上，交替地分布在茎的两侧。
2·Sometimes, they happen to see the orbits of exoplanets edge-on. In those cases, the planet alternately shows more of its dayside and then more of its nightside as it circles its star.
有时，天文学家们碰巧从侧面观察到系外行星的轨道，在这种情况下，行星在围绕恒星旋转的时候就会交替地呈现出有时光面较多、有时暗面较多。
3·The tilted salt filters halt alternately for altering.
倾斜的盐过滤器交替地停下以便改造.
4·Drowning people's mouths alternately sink below and reappear above the surface of the water.
溺水时人的嘴交替地沉没于水下或再出现于水面上。
5·Cold leg recirculation mode will provide long term cooling for the core and hot leg recirculation mode will be used alternately provide reverse flow to the core.
冷段再循环给堆芯提供长期的冷却，热段再循环用于交替地给堆芯提供反向流。