她的神情忧郁, 畏怯, 又稍带着一丝儿满不在乎的调皮味,这种神情使他感到不安.Her expression disturbed him - sad, timorous, with a touch of defiant mischief.玛格丽特和杰勒德彼此畏怯地望了一眼.Margaret and Gerard cast a scared look at one another.他畏怯地走向路边,溜掉了.He shied off by t...
这过程所靠的是一种高选择性和低活性的催化剂.This process relies on a catalyst of high selectivity and week activity.非活性的成分也是重要的.The inactive components are important too.这些化学活性的酶造成广泛损害.These chemically active ferments cause havoc....