... moment of inertia惯性矩，转动惯量 take a moment花一些时间 at the right moment适时；在适当的时候 ...
2
?合于时宜
... 时 shí〈代〉表示近指,相当于“此”、这” [this] 适时;合于时宜 [at the right moment;in good time;timely] 通“伺”。伺候;等待 [wait] ...
3
?时宜
...权宜之计 makeshift stratagem; interim step 时宜 timely; at the right moment; appropriate to the occasion; opportune; to fit current fashion 适宜 suitable; appropriate ..