can不等于shall must 只是方案描述 非定义
【 在 dyatpk 的大作中提到: 】
: For moderate distances, E-REVs can operate in full-electric mode and are then as clean and energy-efficient as BEVs (unlike parallel hybrids and other series hybrids with their smaller batteries and very limited electric range).
:
: 你才语文不及格，先给个描述，然后说“其中，xxx的不算”这种定义你难道一辈子没见过？
: ....................

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