become简单

These collaborations are likely to become increasingly common.

这类协作很可能会变得越来越普遍。

But where and when these animals first became intertwined with humans has been a mystery.

但这些动物最初是在何时何地与人类产生密切联系的，一直是个谜。

Persuading studios to film here would become much more challenging if we couldn’t offer a deep bench of local film workers, on-screen talent and local businesses that support the entertainment industry.

如果我们无法提供大量储备的本地电影从业者、演员以及支持娱乐产业的本地企业，那么说服制片公司来这里拍摄就会变得困难得多。

Since the 2008 launch of the high-speed rail network between Rome and Milan, trains have become the preferred means of travel across Italy for locals and tourists alike.

自2008年罗马和米兰之间的高铁网络开通以来，火车已成为本地人和游客在意大利各地出行的首选交通方式。

Disruptions have become increasingly frequent with train delays now a fixture in Italian media coverage.

运行中断变得越来越频繁，列车延误如今已成为意大利媒体报道中的常客。

“We have a mixed system, there is no spare capacity and as soon as there’s a hiccup on the line, the situation becomes highly complex,” he said.

他说：“我们采用的是混合系统，没有富余运力，线路上一出小故障，情况就会变得非常复杂。”

A toothy grin (especially when there were gaps or blackened teeth) lacked class: drunks, tramps, and music hall performers might gurn and grin with a smile as wide as Lewis Carroll’s gum-exposing Cheshire Cat, but it was not a becoming look for properly bred persons.

露齿的笑（尤其是牙齿有缝隙或发黑时）显得缺乏格调：醉汉、流浪汉和杂耍剧场的演员可能会做鬼脸、咧嘴大笑，笑容宽得像刘易斯·卡罗尔笔下露出牙龈的柴郡猫，但对于有良好教养的人来说，这可不是得体的样子。