con.tract.ion; in.tract.able|tract-=draw #每日一词#

• Mechanisms and rates of genome expansion and contraction in flowering plants. (Neale et al., 2017)
• Mechanisms and rates of genome expansion and contraction in flowering plants. (Neale et al., 2017)
• But in practical situations, the difficulties standing in the way of discovering the plausible fathers are enormous. (Aickin, 1984)
• Conventional log-linear regression models can also be used to test imprinting effects, but it would be time-consuming or even computationally intractable when a number of effects are tested simultaneously [16]. (Li et al., 2013)
• Genomic sciences are now providing the means to address previously intractable problems in forest biology. (Fenning, 2014)