宇航员们安全地乘坐太空舱返回地球。
The astronauts returned to Earth safely in a space ___capsule.
这些植物的种子被包裹在小小的荚果里。
The seeds of these plants are enclosed in small ___capsules.
这些药片太大了,我更喜欢服用小胶囊。
These tablets are too big; I prefer taking small ___capsules.