Without added 2, 4-d in the medium, explant callus induction rate is very low, and needed a very long time to induct.

在不添加2,4 - D的培养基中，外植体的愈伤组织诱导率很低，并且需要诱导很长的时间。

youdao

Soon to come: 4-D, which is 3-D with the added dimension of time -- the same area shot over and over.

FORBES: The case for oil

Horgan dived over in the corner after good work by replacement Tomas O'Leary and D'Arcy eight minutes into added time and man-of-the-match Sexton converted from a difficult angle to maintain his 100% kicking record.

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"We'll see how our programme is going at the time but I'd be confident in these players, " added Ferguson.

BBC: Sir Alex Ferguson unfazed by lost European record