Sometimes they can push parents to desperate lengths.有时可能逼得父母铤而走险

push to推向

My aspirations push me to work harder every day.

我的抱负让我每天要努力工作。

Don't push me to use the last stance.

别逼我用绝招。

These pelicans are among the heaviest flying birds in the world,weighing up to 10 kilos.这些鹈鹕是世上最笨重的飞鸟最多重达十公斤

weigh up估量

You should weigh up the situation.

你应该估量一下形势。

A pineapple can weigh up to 10 kilograms.

波罗蜜果实的重量可大于10公斤。

but a shortage of food supplies has forced them to look elsewhere.但食物供应短缺，它们只得到别处觅食

be forced to被迫(不得不)

The truck was forced to lie by for repairs.

卡车不得不停下来修理。

The enemy was forced to retreat.

敌人被迫撤退。